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The Chicago White Sox shook up their struggling bullpen Monday, optioning Mike MacDougal and David Aardsma to Triple-A Charlotte while purchasing the contracts of pitchers Ryan Bukvich and Bret Prinz from the minor league club. Chicago also transferred utility player Pablo Ozuna from the 15-day to the 60-day disabled list. He has a fracture in his lower right leg and a shoulder injury. Aardsma, 2-1 with a 6.18 ERA in 22 appearances, was sent down following Sunday's 4-3 loss at Toronto. The White Sox optioned MacDougal, 1-3 with a 7.13 ERA, and called up Bukvich and Prinz before Monday's game against the New York Yankees.
The White Sox are coming off a 1-6 trip, and they're getting no help from their relievers. The bullpen was 2-6 with a 9.06 ERA and five blown saves in its past 22 games following Sunday's loss.
Prinz is 5-4 with nine saves and a 4.77 ERA in 98 major-league appearances with Arizona (2001-03), the Yankees (2003-04) and Dodgers (2005). Bukvich is 2-0 with a 6.94 ERA in 48 appearances with Kansas City (2002-04) and Texas (2005).

White Sox option MacDougal, Aardsma - MLB - Yahoo! Sports