Jacob Turner is back on the mound.
Turner, who dealt with shoulder problems in spring training, made his 2012 debut for Single-A Lakeland Monday night. Turner pitched four innings without allowing a hit or a run. He did walk two batters, but picked off one of them.
Turner, the Tigers' first-round pick in 2009, is considered their top pitching prospect. He spent most of last season in Double-A Erie, but made three starts for Toledo and three more for the Tigers. He went 0-1 in the majors with an 8.53 ERA, but is still considered one of the 25 best prospects in baseball.
Turner briefly competed for Detroit's fifth starter spot in spring training, but his shoulder issues knocked him out of the race.