The Pirates activated Wentz on Thursday after he was claimed off waivers Tuesday from the Tigers.
Wentz was designated for assignment by the Tigers on Friday, but finds himself back on an active roster Thursday. In his last seven appearances, he has pitched 10.1 innings and had shutout outings in all but one of them. The one blemish in the stretch was when he gave up four earned in one inning against the Cubs on Aug. 22. To make room for Wentz on the active roster, Domingo German was designated for assignment Thursday.