Don Carman vs. Ryan Mattheus — Career Comparison

Don Carman built a career as a starting pitcher and Ryan Mattheus as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Ryan Mattheus led in home run suppression (HR9+ 206 vs 77), walk avoidance (BB%+ 117 vs 90), and skill-based run prevention (DICE+ 100 vs 87). Don Carman held the edge in strikeout rate (K%+ 95 vs 66). Role difference aside, Ryan Mattheus holds a clear edge on every meaningful shared measure.