The Tigers had an extra spot available on their big-league pitching staff after unloading Tarik Skubal and Casey Mize ahead of the trade deadline, so they'll call upon Diaz to provide extra bullpen depth until the team has to fill the empty rotation spots. The 25-year-old righty has posted a 2.38 ERA and 1.53 WHIP in 11.1 innings since joining the Tigers organization in June and will likely be limited to low-leverage work as long as he's with Detroit.

Diaz was designated for assignment last weekend after he was tagged for seven runs on seven hits and one walk across two-thirds of an inning in last Saturday's loss to the Twins. The 25-year-old still sports a high-90s fastball and potentially plus slider despite major control and command issues, and he'll get a fresh start in Detroit's organization.