Art Mahaffey vs. Justin Miller — Career Comparison

Art Mahaffey built a career as a starting pitcher and Justin Miller as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Justin Miller led in home run suppression (HR9+ 101 vs 79), run prevention (ERA+ 99 vs 90), and skill-based run prevention (DICE+ 99 vs 90). Art Mahaffey held the edge in walk avoidance (BB%+ 94 vs 88). Keeping the role difference in mind, the edge still goes to Justin Miller.