The Marlins have claimed right-hander John McMillon off waivers from the Royals, according to announcements from both clubs. The righty was designated for assignment when Kansas City acquired infielder Paul DeJong. Miami had open roster spots after its deadline selloff and their 40-man roster count goes to 39.
McMillon, now 26, wasn’t selected in the shortened five-round 2020 draft and then signed with the Royals as an undrafted free agent. He is a pitcher who was been considered to have a wide range of potential outcomes because he can regularly send batters back to the dugout but also to first base. He has 129 2/3 innings on his minor league résumé with a 4.79 earned run average. He has struck out 35.2% of batters faced in that time but also given out walks at a massive 17.7% clip.
He was selected to the Royals’ roster in August of last year and pitched four major league innings for them. He allowed one earned run and struck out eight opponents without issuing a walk. But he’s been on optional assignment for all of this year, pitching 30 1/3 innings of the minor league total mentioned above. He’s still walking 17.7% of batters that step into the box but his 23.8% strikeout rate is a bit of a dip from previous seasons, leading to a 6.53 ERA.
It’s understandable that the Royals gave up on a pitcher that clearly still needs some fine tuning, while he’s a sensible flier for the Fish. McMillon can still be optioned for the rest of this season and two more campaigns. They just traded away A.J. Puk, Tanner Scott, Bryan Hoeing, JT Chargois and Huascar Brazobán in the past few days, blowing a huge hole in their bullpen. McMillon is an upside flier with plenty of time for the Marlins to unlock it.