Crompton started the first four and the final two games of the season in the midst of what would be head coach Phillip Fulmer's last season with the Volunteers. He was the starter in wins over Alabama-Birmingham, Kentucky, and Vanderbilt; however, his erratic play within the offensive scheme of newly hired offensive coordinator Dave Clawson contributed to a poor season for Tennessee, where they went 5–6 and missed a bowl game, and the subsequent firing of Fulmer. He finished the season 86-of-167 passing (51.5%) with five interceptions and four touchdowns. 2009 season When Lane Kiffin was hired as head coach of the Volunteers, he named Crompton the starting quarterback prior to the 2009 season. Crompton, as a senior, finally achieved some success with the program. In Kiffin's first game as the Volunteers' head coach, Crompton had a great outing with 233 passing yards, five touchdowns, and two interceptions in the 63–7 home victory over the Western Kentucky Hilltoppers. Crompton led Tennessee to an upset 45–19 home rout of the Georgia Bulldogs and was named the AT&T National Player of the Week. In a game at Bryant–Denny Stadium in Tuscaloosa, Alabama, against undefeated, top-ranked, and eventual national champion Alabama, Crompton's passing had Tennessee in position for a game-winning field goal in the final seconds, only to see the kick blocked by Terrence Cody as the Crimson Tide escaped with a 12–10 win. Crompton won five of his last seven starts in the regular season before the Vols lost 37–14 to Virginia Tech in the Chick-fil-a Bowl. Crompton finished the season with 27 touchdown passes, 13 interceptions, and a 58.3% completion percentage. He surpassed Heath Shuler's single-season best of 25 touchdown passes at Tennessee. Statistics Professional career San Diego Chargers Crompton was drafted by the San Diego Chargers in the fifth round with the 168th overall pick of the 2010 NFL Draft. He was waived during final cuts on September 4, 2010, was re-signed to the Chargers' practice squad the next day, but was released on September 7, 2010. New England Patriots The New England Patriots signed Crompton to their practice squad on November 2, 2010. On January 18, 2011, the Patriots re-signed Crompton to a future contract for the 2011 season. On August 1, he was waived by the team. Tampa Bay Buccaneers On August 5, 2011, Crompton signed with the Tampa Bay Buccaneers. He was cut on September 3, 2011.