Matthew Boyd

Following a stellar start, Boyd's ERA has risen to 4.47. He still, however, boasts a 3.51 SIERA with 208 strikeouts and 42 walks in 159 innings. He also ranks among the top starters in swinging-strike rate by relying heavily on his wipeout slider. This isn't a fluke, as he also punched out a batter per frame in 2018's second half. The Tigers southpaw looked like one of the season's biggest waiver-wire additions who could finish as a top-25 starter like Patrick Corbin in 2018. Now he's a high-strikeout option getting killed by the long ball.

Boyd has been extraordinary with 160 Ks already and while that is near certain to continue, he could see a further jump if Detroit does end up dealing him to a contender where he can get some wins, and specifically in the NL where his ratios would also benefit.

Boyd has emerged from relative obscurity as one of the better pitchers in the American League. His ERA has regressed some over the summer, but given his pristine strikeout-to-walk ratio, it's more likely to improve than worsen going forward.