Aroldis Chapman vs. Don Ferrarese — Career Comparison

Don Ferrarese built a career as a starting pitcher and Aroldis Chapman as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Aroldis Chapman led in strikeout rate (K%+ 161 vs 120), run prevention (ERA+ 112 vs 91), and skill-based run prevention (DICE+ 117 vs 98). Don Ferrarese held the edge in walk avoidance (BB%+ 70 vs 60). Role difference aside, Aroldis Chapman holds a clear edge on every meaningful shared measure.