The Tigers have named Rick Porcello their No. 5 starter heading into the 2013 season.
Drew Smyly, who was battling for the job, will move to the bullpen.
Porcello was 10-12 with a 4.59 ERA in 31 starts with Detroit last season, when Smyly went 4-3 with a 3.99 ERA in 18 starts as a rookie.