The 20-year-old shortstop hasn't yet been cleared to play defense after undergoing surgery in June to repair a dislocated right shoulder, but since he's hitting without restrictions this spring, he could be ready to make regular starts at DH once the minor-league season gets underway later this month. Before suffering the shoulder injury last summer, Rainer had been in the midst of a stellar first season in the professional ranks, as he slashed .294/.383/.452 with five home runs, nine stolen bases and a 13.1 percent walk rate over 149 plate appearances with Single-A Lakeland.

Rainer dislocated his shoulder diving back to first base in a June 3 game for Single-A Lakeland, and he underwent surgery shortly after that. The 20-year-old shortstop seems to be almost fully recovered, and if he stays healthy all season long, he will look to build on the positive momentum he was establishing before getting hurt. Rainer, the 11th overall pick in the 2024 First-Year Player Draft, posted an .835 OPS across 35 games for Lakeland in his first professional campaign, and he's one of the top prospects in Detroit's system. The youngster could make the jump to High-A West Michigan at some point this year and perhaps climb even higher.