Jacob Turner pitches for Lakeland

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.