The posting system (ポスティングシステム posutingu shisutemu) is a baseball player transfer system that operates between Japan's Nippon Professional Baseball (NPB) and the United States' Major League Baseball (MLB).
Despite the drafting of the United States – Japanese Player Contract Agreement, unveiled in 1967 to regulate NPB players moving to MLB, problems began to arise in the late 1990s. Some NPB teams lost star players without compensation, an issue highlighted when NPB stars Hideo Nomo and Alfonso Soriano left to play in MLB after using loopholes to void their existing contracts. A further problem was that NPB players had very little negotiating power if their teams decided to deal them to MLB, as when pitcher Hideki Irabu was traded to an MLB team for which he had no desire to play. In 1998, the Agreement was rewritten to address both problems; the result was dubbed the "posting system".
Under this system, when an NPB player is "posted", his NPB team notifies the MLB Commissioner, with the posting fee based on the type of contract a player signs and its value. The fee is a flat 25% of the value of a minor-league contract; for MLB contracts, the fee is based on the value of the contract that the posted player eventually signs. The player is then given 30 days to negotiate with any MLB team willing to pay the NPB team's posting fee. If the player agrees on contract terms with a team before the 30-day period has expired, the NPB team receives the posting fee from the signing MLB team as a transfer fee, and the player is free to play in MLB. If no MLB team comes to a contract agreement with the posted player, then no fee is paid, and the player's rights revert to his NPB team. The current process replaced one in which MLB held a silent auction during which MLB teams submitted sealed, uncapped bids in an attempt to win the exclusive negotiating rights with the posted player for a period of 30 days. Once the highest bidding MLB team was determined, the player could then only negotiate with that team.
Up to the end of the 2017–18 posting period, 23 NPB players had been posted using the system. Of these, 12 signed Major League contracts, four signed minor league contracts, five were unsuccessful in attracting any MLB interest, and two could not come to a contract agreement during the 30-day negotiation period. The five highest-profile players that have been acquired by MLB teams through the posting system are Ichiro Suzuki, Daisuke Matsuzaka, Yu Darvish, Masahiro Tanaka, and Shohei Ohtani. The first three attracted high bids of $13.125 million, $51.1 million, and $51.7 million respectively. Tanaka was the first player posted under a revised procedure that was in place from 2013 to 2017; he was posted for the maximum $20 million allowed under the new rules. Ohtani was the first player posted under the current procedure; his posting fee of $20 million was grandfathered in under the previous agreement. However, since its implementation the posting system has been criticized by the media and baseball insiders from both countries.
The first instance of a Japanese-born player playing in Major League Baseball was in 1964, when the Nankai Hawks, an NPB team, sent three exchange prospects to the United States to gain experience in MLB's minor league system. One of the players, pitcher Masanori Murakami, was named the California League Rookie of the Year while playing for the Fresno Giants (the San Francisco Giants' Class-A team). Giants executives were impressed with his talent and on September 1, 1964 Murakami was promoted, thus becoming the first Japanese player to play in MLB. After Murakami put up good pitching statistics as a reliever, Giants executives sought to exercise a clause in their contract with the Hawks that, they claimed, allowed them to buy up an exchange prospect's contract. NPB officials objected, stating that they had no intention of selling Murakami's contract to the Giants and telling them that Murakami was merely on loan for the 1964 season. After a two-month stalemate the Giants eventually agreed to send Murakami back to the Hawks after the 1965 season. Thus, after pitching one more season for the Giants, Murakami returned to Japan to play for the Hawks. This affair led to the 1967 United States – Japanese Player Contract Agreement, also known as the "working agreement", between MLB and NPB, which was basically a hands-off policy.
MLB and NPB officials created the posting system as a combined reaction to three cases in the 1990s, involving NPB players who moved to MLB. The first of these occurred in the winter of 1994 when pitcher Hideo Nomo, with the help of agent Don Nomura, became the second Japanese-born player to play in MLB, 30 years after Murakami. Nomo, who was not yet eligible for free agency in Japan, was advised by Nomura that the Japanese Uniform Players Contract's reserve clause limited the Kintetsu Buffaloes' control over him to Japan only. Nomo utilized this loophole by voluntarily retiring from NPB to terminate his contract with the Buffaloes, circumvent its reserve clause and play in MLB. He announced his retirement from NPB in late 1994 and signed with the Los Angeles Dodgers in February 1995, where he won the National League Rookie of the Year award. The following year, the Dodgers signed Nomo to a three-year, $4.3 million contract.
In early 1997, after months of negotiations, the San Diego Padres signed a working agreement with the Chiba Lotte Marines that gave the Padres exclusive signing rights to another Nomura client, Hideki Irabu. Although both Irabu and Nomura stated that Irabu would only sign with the New York Yankees, neither the Padres nor the Marines consulted Irabu before finalizing their deal. The Major League Baseball Players Association (MLBPA) sided with Irabu, stating that the arrangement unfairly disregarded a player's expressed wishes. However, MLB's executive council ruled that the Padres had not violated any existing rule, and therefore legally held the rights to Irabu. Following this decision, Irabu contemplated a number of different options, including playing in NPB until he became a free agent, and taking the matter to the U.S. judicial system. By May, however, the Padres gave in and traded Irabu to the Yankees, who signed him for $12.8 million over four years.
The final incident occurred in 1998, when Alfonso Soriano was unable to leave the Hiroshima Toyo Carp due to contract restrictions. Soriano disliked the intense Japanese practice schedule, and the Carp denied him a salary increase from $45,000 (the league's minimum) to $180,000 per year. Like Nomo and Irabu, Soriano hired Nomura to help his situation. After first attempting to void Soriano's NPB contract by unsuccessfully arguing that the player was legally a minor when he signed it Nomura advised him, like Nomo, to retire from NPB and pursue a career in MLB. This prompted Carp executives to file an injunction against Soriano and send letters to MLB teams demanding that they cease all negotiations with him. NPB officials claimed that after the Nomo case they had privately amended the Player Contract to give NPB teams the right to prohibit a player from signing a new contract anywhere after voluntarily retiring. Since MLB officials were not consulted and they did not agree to any changes, MLB Commissioner Bud Selig declared that MLB would recognize Soriano as a free agent on July 13, 1998, and the Carp backed down. He signed a 5-year, $3.1 million contract with the New York Yankees the same year.
In 1998, Orix BlueWave general manager Shigeyoshi Ino rewrote the 1967 United States – Japanese Player Contract Agreement, when he drafted the "posting system". Selig and NPB Commissioner Hiromori Kawashima signed this new agreement in December 1998. It sought to address each of the problems brought up by the Nomo, Irabu and Soriano cases, by requiring MLB teams to place "bids" for NPB players. These bids became the basis of transfer fees that are paid as compensation to NPB teams whose star players sign with MLB. NPB players are also allowed to negotiate with MLB teams over the terms of their new contracts. Through the 2013 season, the agreement was in effect on a year-to-year basis, terminable at the option of either the MLB Commissioner or the NPB Commissioner provided notice to terminate is given by June 18 of any given year. A new agreement between MLB and NPB, with significantly different rules, was announced on December 16, 2013 and took effect immediately; it continued through the 2016 MLB and NPB seasons. The agreement was extended for an additional season during negotiations for a new agreement.
The current posting agreement was reached after the 2017 MLB and NPB seasons. The agreement runs through October 31, 2021, the expiration date of MLB's current collective bargaining agreement. Not all of the provisions applied immediately—for example, the Hokkaido Nippon-Ham Fighters were allowed to set a $20 million posting fee, the maximum allowed under the previous agreement, for two-way star Shohei Ohtani, whom they posted shortly after approval of the new agreement. Future posting fees will be based on the type of contract a player signs and the deal's value. For players signed to MLB contracts, the posting fee is based on the amount of guaranteed money in the initial contract:
- 20% of the first $25 million
- 17.5% of the next $25 million
- 15% of any amount above $50 million
For players signed to minor-league contracts, the fee will be a flat 25% of the contract's value.
The system only applies to players currently under contract with a Japanese team, although players who have nine or more years of playing service with NPB are exempt. It does not apply to free agents or to amateur players who have never played in NPB. Mac Suzuki, Micheal Nakamura, Kazuhito Tadano, and Junichi Tazawa are the only Japanese players to have debuted in MLB without having played in NPB. The system does not work in reverse; it does not regulate MLB players, such as Alex Cabrera, who moved to NPB.
When a player under contract with a Nippon Professional Baseball team wishes to play in Major League Baseball, he must notify his current team's management and request that they make him available for posting during the next posting period (November 1 – March 1 through the 2013 season, and November 1 – February 1 in the current agreement). The NPB team can reject this request, and the player will not be posted. However, if the team consents, the player is presented to the MLB Commissioner, who then notifies all MLB teams of the posted player.
In the original process, MLB held a four-day-long silent auction during which interested MLB teams submitted sealed bids in U.S. dollars to the Commissioner's Office. After the allotted four days passed, the Commissioner closed the bidding process and notified the posted player's NPB team of the highest bid amount but not who the bidding team was. The NPB team then had four days to either accept or reject the non-negotiable bid amount.
If the bid was rejected, the NPB team retained rights to the player. If it was accepted, the successful MLB team was granted the exclusive rights to negotiate with the player for 30 days. If the player and the MLB team agreed on contract terms before the 30-day period expired, the NPB team received the bid amount as a transfer fee within five business days. The player was then free to play for his new MLB team in the coming season. The transfer fee was not included when calculating an MLB team's total payroll, which is subject to a luxury tax when it exceeds $155 million. If the MLB team could not come to a contract agreement with the posted player, then no fee was paid and the rights to the player reverted to his NPB team. A player could request to be posted again in subsequent years, and the process would be repeated with no advantage to the club that had won the bidding the previous year.
Under the current process, the NPB team notifies the MLB Commissioner of a posting, with the posting fee determined by the value of the contract that a posted player eventually signs with an MLB organization. Once the MLB Commissioner announces the posting, the player has 30 days to sign with an MLB team. Unlike the past system, in which only the team that won the bidding process had negotiating rights, the current system allows the posted player to negotiate with any MLB team willing to pay the posting fee. As in the previous process, if the player signs with an MLB team during the negotiating window, the signing team will pay the posting fee; otherwise, his rights revert to his NPB team. Also mirroring the past system, an unsuccessfully posted player can request a posting in a later year, with the process repeated.
Of the 55 Japanese-born players who have played in MLB, 15 have entered the league using the posting system. Since the system's creation in 1998, the 22 players that have used it have experienced a range of success. Of these 22, eleven were immediately signed to Major League contracts and one player who drew no bids on his first posting was signed to a Major League contract on his second posting. These contracts range from $1.4 million to $155 million. Of the remaining nine, three were signed to Minor League contracts, two were unable to reach a contract agreement and five were unsuccessful in drawing bids from any Major League clubs (one player failed to draw bids during two separate postings). The following tables outline each posting and its outcome.
|Player||Posting date||NPB team||MLB team||Winning bid||Date of contract
|Alejandro Díaz||February 2, 1999||Hiroshima Carp||Cincinnati Reds||$400,001||March 2, 1999||Minor league contract|||
|Ichiro Suzuki||November 9, 2000||Orix BlueWave||Seattle Mariners||$13,125,000||November 30, 2000||3 years, $14 million|||
|Kazuhisa IshiiP||January 3, 2002||Yakult Swallows||Los Angeles Dodgers||$11,260,000||February 8, 2002||4 years, $12.3 million|||
|Ramón RamírezP||February 6, 2003||Hiroshima Carp||New York Yankees||$350,000||March 5, 2003||Minor league contract|||
|Akinori OtsukaP§||November 11, 2003||Chunichi Dragons||San Diego Padres||$300,000||December 9, 2003||2 years, $1.5 million|||
|Norihiro Nakamura||January 28, 2005||Orix Buffaloes||Los Angeles Dodgers||ψUndisclosed||February 3, 2005||Minor league contract|||
|Shinji MoriP||December 12, 2005||Seibu Lions||Tampa Bay Devil Rays||$750,000||November 11, 2006||2 years, $1.4 million|||
|Daisuke MatsuzakaP||November 2, 2006||Seibu Lions||Boston Red Sox||$51,111,111.11†||December 14, 2006||6 year, $52 million|||
|Akinori Iwamura||November 6, 2006||Yakult Swallows||Tampa Bay Devil Rays||$4,500,000||December 15, 2006||3 year, $7.7 million|||
|Kei IgawaP||November 17, 2006||Hanshin Tigers||New York Yankees||$26,000,194‡||December 27, 2006||5 years, $20 million|||
|Tsuyoshi Nishioka||November 17, 2010||Lotte Marines||Minnesota Twins||$5,329,000||December 17, 2010||3 years, $9 million|||
|Norichika Aoki||December 12, 2011||Yakult Swallows||Milwaukee Brewers||$2,500,000||January 17, 2012||2 years, $2.5 million|||
|Yu DarvishP||December 8, 2011||Nippon-Ham Fighters||Texas Rangers||$51,703,411€||January 18, 2012||6 years, $60 million|||
|Masahiro TanakaP||December 26, 2013||Rakuten Eagles||New York Yankees||$20,000,000||January 22, 2014||7 years, $155 million|||
|Kenta MaedaP||December 10, 2015||Hiroshima Carp||Los Angeles Dodgers||$20,000,000||January 7, 2016||8 years, $25 million|
|Shohei Ohtani2W||December 1, 2017||Nippon-Ham Fighters||Los Angeles Angels||$20,000,000||December 8, 2017||Minor league contract|||
|Kazuhisa MakitaP||December 11, 2017||Seibu Lions||San Diego Padres||$500,000||January 6, 2018||2 years, $3.8 million|||
|Yusei KikuchiP||December 3, 2018||Seibu Lions||Seattle Mariners||$10,275,000µ||January 2, 2019||3 years, $43 million|||
- ^§ This was Otsuka's second attempt to play in MLB after an unsuccessful posting the previous year.
- ^ψ Though MLB teams traditionally disclosed bid amounts after negotiating rights were won, the Dodgers chose not to publicly reveal their amount.
- ^† This specific amount was chosen by Red Sox owner John Henry because he deemed it lucky.
- ^‡ The final three digits, 194, represent Igawa's total strikeout count for his 2006 season.
- ^€ The final four digits represent two significant player numbers—34 was the number that Nolan Ryan, then Rangers principal owner and CEO, wore when he played for the team, and 11 was Darvish's number with the Fighters.
- ^µ Posting fee based on guaranteed contract value of $56 million. The initial deal is for 3 years and $43 million, but the Mariners have the right to extend the deal after the 2021 season. If they decline, Kikuchi can either elect to become a free agent or extend the deal for 1 year at $13 million.
- ^P This player is a pitcher.
- ^2W This individual is a two-way player (both a pitcher and position player).
|Player||Posting date||NPB team||Result||Notes|
|Timo Pérez||February 2, 1999||Hiroshima Carp||Pérez did not draw any bids from an MLB team and re-signed with the Carp for one season. His contract was purchased by the New York Mets on March 27, 2000.|||
|Akinori OtsukaP||December 18, 2002||Kintetsu Buffaloes||Otsuka did not draw any bids from an MLB team. He signed with the Chunichi Dragons on March 20, 2003 for ¥95 million ($800,404 in 2003).|||
|Yusaku IrikiP||November 22, 2005||Nippon-Ham Fighters||Iriki did not draw any bids from an MLB team and was released by the Fighters on December 5, 2005. He was later signed by the New York Mets on January 18, 2006 to a one-year, $750,000 contract.|||
|Koji MitsuiP||December 18, 2008||Seibu Lions||Mitsui did not draw any bids from an MLB team. He was re-posted the next month.|||
|Koji MitsuiP§||January 8, 2009||Seibu Lions||Mitsui again did not draw any bids from an MLB team. He was re-signed by the Lions on January 20, 2009, to a one-year, ¥57 million ($594,453 in 2009) contract.|||
|Hisashi IwakumaP||November 1, 2010||Rakuten Eagles||The Oakland A's were awarded exclusive negotiating rights on November 7, 2010, after bidding $19.1 million. Contract negotiations ended without an agreement and Iwakuma returned to the Golden Eagles.|||
|Hiroki SanadaP||November 23, 2011||Yokohama BayStars||Sanada did not draw any bids from an MLB team. He was later released by the BayStars.|||
|Hiroyuki Nakajima||November 28, 2011||Seibu Lions||The New York Yankees were awarded exclusive negotiating rights after bidding $2.5 million. Contract negotiations ended without an agreement and Nakajima returned to the Lions.|||
|Tony BarnetteP||November 2, 2015||Yakult Swallows||Barnette did not draw any bids from an MLB team and was released by the Swallows. He was later signed by the Texas Rangers on December 15, 2015 to a two-year, $3.5 million contract.|||
Since its implementation in late 1998 the posting system has been heavily criticized. Ichiro Suzuki's agent remarked that "the player literally gets zero advantage from [the posting system]... the Japanese teams benefit by holding the players hostage". Don Nomura called the process a "slave auction". Much of the criticism of the system stems from its forcing NPB players to negotiate their contracts solely with the MLB team that submitted the highest bid. The Japan Times columnist Marty Kuehnert believes that since no other team is allowed to submit competitive counter-offers, negotiations result in salaries below the player's market value. Kuehnert also believes the system fosters a "take-it-or-leave-it" situation; if the team and the player have not finalized contract negotiations by the end of a 30-day period, the team can make a low offer knowing that the player's only other option is to play in Japan for another year. It has been suggested that this is a violation of the Anti-Monopoly Act, a Japanese antitrust law that prohibits parties from signing an international agreement or contract that "contains such matters as constitute an unreasonable restraint of trade or unfair business practices".
The Japanese Professional Baseball Players Association (JPBPA) was not consulted before the system was implemented by NPB club owners, and did not subsequently ratify it. Since its introduction JPBPA has expressed many concerns, likening the process to "human trafficking". Agreeing that the system takes unfair advantage of NPB players, the Major League Baseball Players Association (MLBPA) offered to help JPBPA fight the posting system in court. However, according to one JPBPA official, the Japanese court process is too long and involved; therefore, the "problem can't be helped".
Yomiuri Giants club representative Hidetoshi Kiyotake has expressed dislike of the system, because it enables Major League Baseball to poach players from Japan. By using the posting system, he says, Japanese teams make a profit in the short term, but by allowing Japan's best players to be sold to MLB, NPB teams and Japanese baseball suffer in the longer term. When Giants pitcher Koji Uehara asked to be posted in 2005, Kiyotake denied his request, saying: "We don't recognize the posting system. I've said from the beginning that this is out of the question."
In the middle of the 2012–13 posting season, MLB approached NPB seeking to change the way MLB teams bid for the right to negotiate with NPB players. Instead of using a silent auction in which teams bid blindly, MLB would prefer its teams to participate in a traditional, open auction where the bids are known and teams can knowingly outbid each other. Such a change would likely lower the price of the transfer fees paid to NPB teams. MLB and the players' unions agree that they'd prefer to see the players receive more money for the transfer rather than the teams. The Japan Times columnist Jason Coskrey also believed that these talks provided the JPBPA an opportunity to voice their concerns about the posting system and attempt to gain more leverage for themselves during the posting process. The new agreement, as noted, was announced on December 16, 2013, with most of the changes desired by MLB and players from both leagues.
The posting system was criticized by MLB insiders and by the U.S. media, after the controversial 2006–07 posting period. Before the posting of the period's first player, Daisuke Matsuzaka, in early November 2006, there was speculation that he might draw bids as high as $30 million—more than twice the previous record bid that Ichiro Suzuki had garnered in 2000–01. After his silent auction was closed, it was revealed that Matsuzaka had drawn a bid of $51.1 million, shocking American and Japanese baseball executives. The Boston Red Sox's winning bid was more than $11 million higher than the next largest.
With the negotiations between Matsuzaka and the Red Sox at a stalemate as the negotiation period neared its close, The Washington Post's Dave Sheinin questioned both parties' intentions. Sheinin believed that the Red Sox had foreseen the contractual stalemate and had submitted a high bid simply to deny the New York Yankees an opportunity to negotiate with Matsuzaka. However, after Matsuzaka's agent Scott Boras threatened to take Matsuzaka back to NPB if his price was not met, Sheinin theorized that Boras intentionally wanted to hinder contract negotiations. ESPN The Magazine's Tim Kurkjian described the situation as "the most obvious game of chicken ever." Sheinin suggested that, should the negotiations fail, Boras could take legal action on the grounds that the requirement of MLB teams to pay large transfer fees to NPB teams artificially depressed the player's personal contract. Boras did not believe that the transfer fee should affect the player's compensation.
Despite the negotiation difficulties, the Boston Red Sox eventually signed Matsuzaka. The team paid approximately $103.1 million in total, including the transfer fee and contract, to acquire the pitcher. Kurkjian believes that with fees and contracts this high, small-market teams could not afford to compete with large-market teams for the rights to negotiate with some posted Japanese players. Kurkjian blames the posting system's use of a blind bidding system as the cause of Matsuzaka's "outrageous offer." He also postulates that Matsuzaka's high bid amount helped to inflate the bids for Kei Igawa who was posted two weeks later, perpetuating the problem further. After winning the negotiation rights to Igawa, Yankees' general manager Brian Cashman told reporters that "the posting system, clearly with what took place this winter, might not necessarily be the best system". Kurkjian claims that other MLB executives already believe that a traditional free agent structure, where the highest bidder wins, would be better than the current system. Cashman and Yankees team president Randy Levine met with NPB team officials in early 2007 to discuss the posting system, among other things. These meetings did not result in any immediate changes.
- The agreement is officially called the "United States – Japanese Player Contract Agreement" (日米間選手契約に関する協定). In English, the process is most commonly referred to as the "posting system", though it is also sometimes referred to as the "posting agreement". The corresponding Japanese term is most commonly written in katakana as "ポスティングシステム", though "ポスティング制度" is sometimes used.
- Kleinberg, Alexander (December 24, 2001). "Where have you gone, Masanori Murakami?". Major League Baseball. Archived from the original on August 18, 2002. Retrieved November 13, 2008.
- Whiting 2004, pp. 75–80.
- Singer, Tom (November 14, 2006). "Matsuzaka posting system's latest gem". Major League Baseball. Retrieved August 24, 2008.
- Whiting 2004, pp. 102–112.
- Klein 2006, p. 137.
- "Dodgers Sign Nomo To Three-Year Deal". The New York Times. Associated Press. February 23, 1996. Retrieved April 14, 2008.
- Whiting 2004, pp. 130–134.
- Klein 2006, p. 138.
- Pearlman, Jeff (August 26, 2002). "He's Arrived". Sports Illustrated. Retrieved November 21, 2008.
- Whiting 2004, pp. 142–144.
- Klein 2006, p. 139.
- Whiting 2004, p. 146.
- Sandomir, Richard (December 5, 2006). "Baseball: Irabu's legacy is a high-stakes auction". International Herald Tribune. Archived from the original on December 6, 2006. Retrieved April 9, 2008.
- Price, S.L. (July 8, 2002). "The Ichiro Paradox". Time. Retrieved April 9, 2008.
- "United States – Japanese Player Contract Agreement" (PDF). Japanese Professional Baseball Players Association. Retrieved March 27, 2009.
- Corcoran, Cliff (December 17, 2013). "New posting system for Japanese players favors players, MLB teams". SI.com. Archived from the original on January 26, 2014. Retrieved January 23, 2014.
- Morosi, Jon Paul (November 21, 2017). "Pitcher? Hitter? Both! And soon, Ohtani in play". MLB.com. Retrieved January 23, 2018.
- "NPB, players to revise free-agency system". The Japan Times. Kyodo News. June 26, 2008. Retrieved September 6, 2009.
- Schwarz, Alan (November 19, 2008). "Japanese Are Irked by U.S. Interest in Pitcher". The New York Times. Retrieved November 25, 2008.
- Allen, Jim (September 12, 2008). "Amateur Tazawa bypassing Japan leagues for MLB". ESPN.com. Retrieved November 25, 2008.
- "Micheal Nakamura". Australian Baseball League. Retrieved June 22, 2015.
- Browne, Ian (December 4, 2008). "Tazawa officially in fold for Red Sox". Major League Baseball. Archived from the original on December 7, 2008. Retrieved March 19, 2009.
- Caple, Jim (July 3, 2001). "No Ichiro-type tale for Arias". ESPN.com. Retrieved November 20, 2008.
- "Uehara eyeing majors for 2006". The Japan Times. January 19, 2005. Retrieved March 17, 2009.
- Rockerbie, Duane W. (July 2007). "Peculiarities of the Major League Baseball Posting System" (PDF). University of Lethbridge. Archived from the original (PDF) on July 21, 2011. Retrieved February 2, 2009.
- Singer, Tom (December 22, 2008). "Yankees, Tigers hit with luxury tax". Major League Baseball. Retrieved February 2, 2009.
- "Players by birthplace : Japan Baseball Stats and Info". Baseball-Reference.com. Retrieved July 9, 2014.
- Haft, Chris (March 3, 1999). "Reds sign Quezada after all". The Cincinnati Enquirer. Archived from the original on 2012-07-14. Retrieved March 31, 2008.
- Graczyk, Wayne (November 12, 2000). "Ichiro, Kinjo are the talk of the town". The Japan Times. Retrieved May 18, 2009.
- Isadore, Chris (January 11, 2002). "The latest Japanese import". CNNMoney.com. Retrieved November 20, 2008.
- "Ichiro Suzuki Statistics". Baseball-Reference.com. Retrieved November 20, 2008.
- "National League Team Notes". USA Today. February 5, 2002. Retrieved March 31, 2008.
- "Dodgers, Ishii agree to $12.3 million, four-year deal". Associated Press. February 9, 2008. Archived from the original on October 22, 2012. Retrieved November 20, 2008.
- "Los Angeles Dodgers Transactions – 2002". ESPN.com. Retrieved November 20, 2008.
- "Yankees reach terms with ex-Carp". The Japan Times. Associated Press. February 7, 2003. Retrieved April 9, 2008.
- "Ramon Ramirez Statistics". Baseball-Reference.com. Retrieved November 20, 2008.
- "Padres sign Akinori Otsuka". Scout.com. December 10, 2003. Archived from the original on July 16, 2011. Retrieved March 31, 2008.
- "Akinori Otsuka Statistics". Baseball-Reference.com. Retrieved November 20, 2008.
- "Nakamura once agreed with Mets". ESPN.com. February 3, 2005. Retrieved March 31, 2008.
- "Norihiro Nakamura Statistics". Baseball-Reference.com. Retrieved November 20, 2008.
- Topkin, Marc (February 26, 2006). "(New) home, sweet home". St. Petersburg Times. Retrieved March 31, 2008.
- "Tampa Bay Rays Transactions – 2006". ESPN.com. Retrieved November 20, 2008.
- "Matsuzaka, Red Sox reach agreement on six-year deal". ESPN.com. February 23, 2007. Retrieved March 31, 2008.
- "Daisuke Matsuzaka Statistics". Baseball-Reference.com. Retrieved November 20, 2008.
- "Scorecard Daily". Sports Illustrated. November 6, 2006. Retrieved November 20, 2008.
- Chastain, Bill (December 15, 2006). "Iwamura signs three-year deal". Major League Baseball. Archived from the original on April 18, 2008. Retrieved March 31, 2008.
- "Akinori Iwamura Statistics". Baseball-Reference.com. Retrieved April 9, 2008.
- "Bidding starts for Japanese pitcher Igawa's MLB rights". ESPN.com. November 17, 2006. Retrieved November 20, 2008.
- "Igawa, Yankees complete five-year, $20 million deal". ESPN.com. December 27, 2006. Retrieved March 31, 2008.
- "Twins win posting rights for Nishioka". The Japan Times. Associated Press. November 28, 2010. Retrieved December 17, 2010.
- "Twins, Tsuyoshi Nishioka agree to terms". ESPN.com. November 28, 2010. Retrieved December 17, 2010.
- "Brewers win Norichika Aoki bid rights". ESPN.com. December 18, 2011. Retrieved December 18, 2011.
- "Aoki will make $2.5 million with Brewers". Fox Sports Wisconsin. Associated Press. January 23, 2012. Retrieved February 25, 2012.
- Waldstein, David (December 8, 2011). "Japanese Star Pitcher Available, for a Price". The New York Times. Retrieved January 21, 2013.
- "Rangers win rights to Darvish with record bid". MLB.com. December 20, 2011. Retrieved December 20, 2011.
- "Yu Darvish and Texas Rangers agree to $60 million, six-year contract, totaling more than $111 million in investments with a record posting fee". New York Daily News. Associated Press. January 18, 2012. Retrieved January 21, 2013.
- "Posting period for Tanaka starts". The Japan Times. Associated Press. December 27, 2013. Retrieved January 21, 2014.
- Gartland, Dan (December 8, 2017). "Angels Win Shohei Ohtani Sweepstakes". Sports Illustrated. Retrieved January 23, 2018.
- "Padres sign Japanese right-hander Makita". MLB.com. January 6, 2018. Retrieved January 7, 2018.
- Axisa, Mike (December 3, 2018). "Yusei Kikuchi posted for MLB teams: Everything you need to know about the Japanese lefty". CBSSports.com. Retrieved January 7, 2019.
- Passan, Jeff (January 2, 2019). "Mariners announce signing of free-agent lefty Yusei Kikuchi". ESPN.com. Retrieved January 7, 2019.
- Jackson, Tony (February 1, 2005). "Dodgers Win Nakamura's Rights". Los Angeles Daily News. Retrieved May 19, 2008.
- "Why $51,111,111.11? John Henry explains". Boston Herald. December 15, 2006. Retrieved April 9, 2008.
- Durrett, Richard (January 20, 2012). "Rangers did homework on Yu Darvish". ESPNDallas.com. Retrieved January 26, 2012.
- White, Paul (November 22, 2006). "Rising sons make grade in majors". USA Today. Retrieved November 20, 2008.
- "Timo Perez Statistics". Baseball-Reference.com. Retrieved November 20, 2008.
- "Buffaloes deal Otsuka to Dragons". The Japan Times. Kyodo News. March 21, 2003. Retrieved April 9, 2008.
- Shpigel, Ben (February 19, 2006). "Japanese Pitcher Channels His Inner Warrior". The New York Times. Retrieved March 31, 2008.
- "Iriki to pitch for Mets". The Japan Times. Associated Press. January 20, 2006. Retrieved April 4, 2008.
- 三井に複数球団興味24日にも「入札結果」. Nikkan Sports (in Japanese). December 17, 2008. Retrieved January 20, 2009.
- "Seibu's Mitsui to be 'posted' again". The Japan Times. Kyodo News. January 6, 2009. Retrieved January 20, 2009.
- 西武残留三井「迷惑料」1300万円減に納得. Nikkan Sports (in Japanese). January 21, 2009. Retrieved February 24, 2009.
- "Athletics win bidding for veteran hurler Iwakuma". The Japan Times. Kyodo News. November 10, 2010. Retrieved December 11, 2010.
- "Iwakuma gives up on making move to MLB". The Japan Times. Kyodo News. December 7, 2010. Retrieved December 11, 2010.
- Singer, Tom (January 18, 2012). "Clubs more cautious with Japan's talent pool". Major League Baseball. Retrieved January 21, 2014.
- "Lions' Nakajima posted to majors". The Japan Times. Kyodo News. November 30, 2011. Retrieved December 8, 2011.
- "Yanks, Hiroyuki Nakajima don't agree". ESPN New York. ESPN.com. January 16, 2012. Retrieved January 5, 2012.
- "Swallows to post closer Barnette". The Japan Times. Kyodo News. November 2, 2015. Retrieved February 20, 2017.
- "Barnette agrees to deal with Rangers". The Japan Times. Associated Press. December 16, 2015. Retrieved February 20, 2017.
- "Ichiro trying to make best of bad system". The Japan Times. November 5, 2000. Retrieved March 17, 2009.
- Siesta 2008, p. 1092.
- Whiting 2004, p. 147.
- Siesta 2008, p. 1095.
- Whiting, Robert (April 11, 2007). "Is the MLB destroying Japan's national pastime?". The Japan Times. Retrieved March 18, 2009.
- Passan, Jeff (November 30, 2012). "MLB seeking changes to posting system for players from Japan". Yahoo! Sports. Retrieved December 19, 2012.
- Coskrey, Jason (December 4, 2012). "NPB players should speak out about posting system". The Japan Times. Retrieved December 19, 2012.
- Kurkjian, Tim (December 16, 2006). "Posting process needs to be altered". ESPN The Magazine. Retrieved January 20, 2009.
- Sloan, Dan (February 1, 2007). "Japan player posting system needs review, say Yankees". Reuters. Retrieved January 20, 2009.
- Sheinin, Dave (December 13, 2006). "Red Sox' Talks With Matsuzaka at Endpoint". The Washington Post. Retrieved February 2, 2009.
- "Cashman, Levine take show from China to Japan". The Japan Times. February 2, 2007. Retrieved March 17, 2009.
- Klein, Alan M. (September 2006). Growing the Game: The Globalization of Major League Baseball. Yale University Press. ISBN 978-0-300-11045-6.
- Siesta, Victoria J. (2008). "Out at Home: Challenging the United States-Japanese Player Contract Agreement Under Japanese Law" (PDF). Brooklyn Journal of International Law. 33 (3). Retrieved April 3, 2011.
- Whiting, Robert (April 2004). The Meaning of Ichiro: The New Wave from Japan and the Transformation of Our National Pastime. Warner Books. ISBN 978-0-446-53192-4.