Bailey, who was acquired from the Oakland A's to replace Jonathan Papelbon as the Red Sox closer, has pitched just one inning in the past 10 games. Earlier this spring, Bailey was slowed by a lat injury.
In talking to reporters, Valentine indicated that Aceves would have greater value in the bullpen. Without mentioning names, Valentine said there "might be a health situation" that could result in a reliever being put on the disabled list. After the game, he confirmed that pitcher is Bailey.
CLICK HERE for more on Bailey's injury.