Brendan Donnelly vs. John Halama — Career Comparison

John Halama 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 home run suppression (HR9+ 196 vs 97), strikeout rate (K%+ 140 vs 76), and run prevention (ERA+ 168 vs 105). John Halama held the edge in walk avoidance (BB%+ 129 vs 110). Role difference aside, Brendan Donnelly holds a clear edge on every meaningful shared measure.