|First baseman / Designated hitter|
|Born: August 30, 1975|
|July 16, 2004, for the Seattle Mariners|
|Last MLB appearance|
|September 5, 2004, for the Seattle Mariners|
|Runs batted in||36|
Jacobsen was drafted out of Lewis-Clark State College in the 7th round of the 1997 Major League Baseball Draft by the Milwaukee Brewers. After six years in the Brewers organization, advancing as high as Triple-A, Jacobsen was released by the Brewers on June 15, 2002. On June 25, 2002, the St. Louis Cardinals signed Jacobsen, assigning him to their Double-A affiliate, the New Haven Ravens. Jacobsen was granted free agency after the 2003 season and signed with the Seattle Mariners on November 10, 2003.
Jacobsen spent the 2004 season with the Mariners Triple-A affiliate, the Tacoma Rainiers, batting .312 with 26 home runs and 86 RBIs. He also won the Pacific Coast League Home Run Derby. His performance earned Jacobsen a call up on July 16, where he maintained his impressive power, hitting 9 home runs in only 160 at bats. A knee injury sidelined Jacobsen for most of September, eventually resulting in arthroscopic surgery on it on May 12, 2005. This caused him to miss the season, and not appear in any major league games in 2005. On February 26, 2006, Jacobsen signed a minor league contract with the Chicago White Sox; however, Jacobsen was released before playing any games for the White Sox. He spent 2006 playing for the Long Island Ducks of the independent Atlantic League of Professional Baseball, batting .291 with 21 home runs and 89 RBI. Jacobsen played 9 games for Olmecas de Tabasco of the Triple-A Mexican League in 2007. After he could not sign with another big-league team, Jacobsen retired from baseball.
Jacobsen is currently part of the KJR 950 AM Chuck and Buck morning show. He previously appeared on Seattle Q13 Fox station doing Mariners post-game coverage. He also coaches three select baseball teams 13u 14u 15u (The Snoqualmie Valley Bucks) in Snoqualmie, Washington while running a facility called Bucky's Baseball Academy.
- "Tacoma Yearly All-Star Game Selections" (PDF). Tacoma Rainiers. tacoma.rainiers.milb.com. Retrieved 2009-12-17.