Justin Masterson vs. Zach McAllister — Career Comparison

Justin Masterson built a career as a starting pitcher and Zach McAllister as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Justin Masterson led in home run suppression (HR9+ 143 vs 94), strikeout rate (K%+ 110 vs 90), and skill-based run prevention (DICE+ 105 vs 97). Zach McAllister held the edge in walk avoidance (BB%+ 122 vs 77). Role difference aside, Justin Masterson holds a clear edge on every meaningful shared measure.