The Cardinals initially promoted Reyes in early August to serve as a relief ace, but poor performance and injuries in the rotation led to him receiving five starts over the season's final month. He was almost unhittable as a reliever (.138 BAA) and remained dominant as a starter, but he clearly walked too many batters in both roles. Reyes has ace-level stuff, not only dominating with his famed four-seamer that sits at 97 mph and can touch 102, but also rendering hitters helpless with highly effective secondaries in his curveball (.538 OPS against, 46.2 strikeout percentage) and changeup (.592, 34.4 percent). Fringe-average fastball command and control are the only blemishes in his profile, but his stuff is so nasty that he understandably reached the majors after just 100 combined innings at Double-A Springfield and Triple-A Memphis. Noah Syndergaard, for instance, needed 216.2 innings at those two levels before his MLB debut. Unfortunately, Reyes' development will be delayed as he is slated to undergo Tommy John surgery and miss the entire 2017 season.