RHP Kyle McCulloch has been reassigned to the Mudcats from Triple-A Louisville. RHP Jeff Jeffords has been granted his release.
McCulloch, who was the Chicago White Sox first round pick in the 2006 draft from the University of Texas, was 0-1 with a 3.08 ERA over eight relief appearances with the Bats in 2011. McCulloch, 26, has been a member of the Birmingham Barons a portion or in full from 2007-2010.
Jeffords held a 7.54 ERA over 10 relief appearances for the Mudcats.