Louisville Bats
Chapman began the 2010 season assigned to the Triple-A Louisville Bats, and made his professional debut with the Louisville Bats on Sunday, April 11, in Toledo against the Mud Hens, where he pitched innings, giving up 1 unearned run, while striking out 9. Chapman made 13 starts with Louisville, pitching to a 4.11 ERA, and pitched to a 2.40 ERA after the team used him as a relief pitcher.