WEDNESDAY: Balester has been designated for assignment and Berry has been called up, the team announced (on Twitter).
TUESDAY: The Tigers will designate Collin Balester for assignment tomorrow according to Brian Britten, the team's director of media relations (on Twitter). The move will clear a roster spot for Quintin Berry.
Balester, 25, pitched to a 6.50 ERA with nearly as many walks (11) as strikeouts (12) in 18 innings this season. Detroit acquired him from the Nationals for Ryan Perry this offseason. Balester is out of options and needs to clear waivers before he can go to Triple-A.