The Detroit Tigers activated rookie outfielder Wenceel Perez from the 10-day injured list on Thursday.
Perez, 24, landed on the list on Aug. 10 with a left oblique strain. He left the previous day's game against the San Francisco Giants in the fourth inning with side discomfort.
Perez is hitting .242/.298/.386 with nine homers, 32 RBIs and nine stolen bases in 97 games this season.
The Tigers optioned infielder Ryan Kreidler to Triple-A Toledo in a corresponding move.
Kreidler, 26, is batting .119 with one homer, two RBIs and five stolen bases in 35 games this season.