Corey Thurman was a 4th round pick of the Kansas City Royals in 1996. Thurman has played in 14 minor league seasons for many different teams. In 2002, Thurman played the entire season with the Toronto Blue Jays as a relief pitcher. He also played for Toronto during part of the 2003 season. During his short major league career, Thurman appeared in 49 games with a record of 3 wins and 4 losses. His major league ERA was 4.75.
Thurman played for several different major league organizations through 2007 but has not appeared in the majors since 2003. In 2008, Thurman joined the York Revolution in the Atlantic Independent League. It seems that he has found a home in York. He has become a fan favorite and an effective pitcher for the Revolution. In 2011, Thurman was second in the league in Wins (13), Strikeouts (111) and ERA (3.33). He was selected to the league all star team and was the starting pitcher for the Revolution in the Divisional Playoff series against the Lancaster Barnstormers. He tossed 5 2/3 innings in the playoff game but did not get a decision. York came from behind in the last two innings to win the game 3-2.