Ranking Every MLB Team’s Ace in 2021

30. Mitch Keller — Pittsburgh Pirates

Keep your heads up, Pirates’ fans. You soon will be able to cheer for your team’s No. 1 overall pick in the 2021 MLB Draft. And hey, maybe you’ll get a second top-pick in a row in 2022. But for now, Mitch Keller is the top pitcher you can cheer for. The rotation isn’t too strong, but Keller has some nice potential.

Keller’s fastball and curveball are both strong strikeout pitches. He pitched well in limited action last season, although his command left a lot to be desired — 18 walks versus 15 strikeouts. Once Keller calms his nerves and finds a consistent delivery, he will be a good starting pitcher.

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29. Matthew Boyd — Detroit Tigers

After winning four-straight AL Central titles from 2011-14, the Tigers have recorded just one winning season (86-75, 2016) since — cratering in ’19 with a 47-114 mark. Matthew Boyd is Detroit’s supposed ace, though he hardly qualifies. The lefty has a career ERA of 5.02. In ’19, Boyd surrendered an AL-worst 39 home runs. Last year — in 12 starts — Boyd once again allowed more homers than any pitcher in baseball with 15. On top of that, he allowed 45 runs — also the worst mark in the game. Casey Mize will be Detroit’s ace very soon.

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