Doyle, 24, was a third-round pick of the Rockies in 2017 who posted impressive production in the minors during the previous two seasons. He reached High-A ball for the first time in 2019 and logged a 3.25 ERA/3.61 FIP with 12.0 K/9 and 3.25 BB/9 over 36 innings. Since then, FanGraphs (No. 17), MLB.com (No. 19) and Baseball America (No. 23) have ranked Doyle among Colorado’s 25 best prospects. According to FanGraphs’ Eric Longenhagen, the hard-throwing Doyle could make it as a setup man in the majors.
This is the latest in an ever-growing line of injuries for the 26-year-old Dahl, who has missed an exorbitant amount of time since he debuted in 2016. Dahl sat out almost a month earlier this year with back problems, and he’ll now see his season end now just a week and a half after returning. While Dahl has been an above-average offensive contributor throughout his career, he had an uncharacteristically awful 2020 at the plate, hitting .183/.222/.247 with no home runs in 99 trips.