Art Mahaffey vs. Seth Martinez — Career Comparison

Art Mahaffey built a career as a starting pitcher and Seth Martinez as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Seth Martinez led in run prevention (ERA+ 122 vs 90), home run suppression (HR9+ 108 vs 79), and walk avoidance (BB%+ 104 vs 94). Art Mahaffey held the edge in strikeout rate (K%+ 102 vs 89). Role difference aside, Seth Martinez holds a clear edge on every meaningful shared measure.