CM Punk is an American professional wrestler currently signed to World Wrestling Entertainment (WWE) on its Extreme Championship Wrestling (ECW) brand. Punk initially came to prominence through his career on the professional wrestling independent circuit, primarily as a member of the Ring of Honor (ROH) roster where he was an ROH Tag Team Champion, ROH World Champion, the first head trainer of the ROH wrestling school and was considered to be one of the three icons of ROH (along with Samoa Joe and Homicide). In June 2005 Punk accepted a developmental contract from WWE and was sent to WWE's developmental promotion Ohio Valley Wrestling (OVW) in which he won all the championships in the promotion, including the OVW Heavyweight Championship. When the ECW brand was revived in 2006 Punk was brought into the brands roster where he had early success when, from his debut in June 2006 until January 2007, he was undefeated in singles competition.