Boof Bonser vs. Aroldis Chapman — Career Comparison

Boof Bonser 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 home run suppression (HR9+ 126 vs 78), strikeout rate (K%+ 161 vs 116), and run prevention (ERA+ 112 vs 92). Boof Bonser held the edge in walk avoidance (BB%+ 115 vs 60). Role difference aside, Aroldis Chapman holds a clear edge on every meaningful shared measure.