The Tigers announced Monday that they’ve claimed right-hander Marcos Diplan off waivers from the Twins. In order to make room on the 40-man roster, Detroit placed left-handed reliever Daniel Stumpf on the 60-day injured list due to a left elbow strain.
Minnesota picked up Diplan in a minor July swap with the Brewers, sending cash to Milwaukee after Diplan had been designated for assignment. The 22-year-old righty never pitched in a big league game with the Twins before being designated for assignment himself this past weekend when Minnesota added hard-throwing prospect Jorge Alcala to its MLB roster.
Diplan, in fact, has never pitched at the big league level or even progressed beyond Double-A. He appeared in 38 games between the Double-A affiliates for the Twins and Brewers, totaling 68 2/3 innings of 4.85 ERA ball with 9.6 K/9 against 5.8 BB/9. Diplan was ranked among the Brewers’ 10 to 20 best prospects back in 2017 but has seen his stock dip in recent seasons. As Fangraphs’ Eric Longenhagen wrote back in ’17, he has an above-average fastball that runs up to 95 mph and a pair of inconsistent but at-times above-average secondary pitches in his changeup and slider.
Control has clearly been an ongoing issue for Diplan, who has averaged nearly five walks per nine innings pitched in his professional career. He has a minor league option remaining beyond the current season, however, and given the total lack of certainty in the Detroit bullpen, there’ll be ample opportunities for him in 2020 if he sticks on the 40-man roster over the course of the offseason.