Breakout: SP Zac Gallen
Gallen pitched well over three levels in 2017 (2.93 ERA), but his arm did regress the next season at AAA (3.65 ERA and 1.470 WHIP). His failure came from a high batting average against (.281) and a pullback in his walk rate (3.2).
In 2019, he blossomed at AAA (9-1 with a 1.77 ERA and 112 Ks over 91.1 innings). Gallen set a career-best in both his walk rate (1.7) and strikeout rate (11.0).
Over 15 starts in the majors, he went 3-6 with a 2.81 ERA and 96 strikeouts over 80 innings.