Brendan Donnelly vs. John Mitchell — Career Comparison

John Mitchell built a career as a starting pitcher and Brendan Donnelly as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Brendan Donnelly led in run prevention (ERA+ 168 vs 94), strikeout rate (K%+ 140 vs 68), and skill-based run prevention (DICE+ 138 vs 105). Role difference aside, Brendan Donnelly holds a clear edge on every meaningful shared measure.