The Tigers selected John Peck’s contract on Monday and plan to put him at shortstop on Tuesday and Wednesday, giving the 24-year-old an immediate role as September begins. Manager AJ Hinch said Peck will be in the lineup and that his defense is what makes him fit now.
It is the kind of move that can change a game plan before the next pitch. Riley Greene is expected back on Tuesday after missing three weeks with a right hamstring strain, and the Tigers are reshaping their infield around two young players at once while still trying to stay in the race.
Peck did not get here by staying healthy all year. He missed a good chunk of the season with a hamstring injury, but he hit 10-for-21 with two doubles and a homer in six games with the Mud Hens, enough to push him back into the conversation. Hinch said Peck brings stability and called his defense his calling card, a trait the club clearly wants on the field now.
The roster move on Monday also brought back Yilber Diaz, sent Tanner Rainey off the active roster and optioned Corey Julks to Triple-A Toledo. That is the practical side of a team trying to squeeze value out of every spot, and it matters because Peck’s arrival is expected to shift playing time for several veterans and other younger players, including Javier Báez, Gleyber Torres, Brett Callahan, Ben Malgeri, Zach McKinstry, Colt Keith and Spencer Torkelson in different ways.
That is where the Tigers’ message gets sharper. Hinch has said September is not a tryout, and Riley Greene echoed the same idea, saying the newcomers are here because they are really good baseball players and because the Tigers need them to help win games. The club entered the series with the Twins nine games behind the Central Division-leading White Sox and 5.5 games out of the final wild-card spot, which is why every lineup decision now carries more weight than it would in a lost season.
For Peck, the immediate answer is clear: he starts at shortstop Tuesday and Wednesday. What comes after that is the part the Tigers have not pinned down, and that makes his promotion more than a short look — it is a test of whether a player who was among the final spring training cuts can hold a place while the Tigers are still chasing the standings, not just sorting out the future.
