May followed up his breakout 2017 campaign with a similarly strong 2018, pitching his way into the conversation for best arm in the system. There’s still room to add strength across a wiry 6-foot-6 frame, and his ability to limit walks with a high-velocity fastball is enthusing. May’s breaking ball flashes above-average potential and could give a second miss-bat pitch. He’s working on improving a changeup, the last large developmental point of focus before he’s ready for the big leagues. We’re bullish on May and see a potential mid-rotation starter that will keep moving up prospect lists in 2019.