Mitch Keller vs. Bob Macdonald — Career Comparison

Mitch Keller built a career as a starting pitcher and Bob Macdonald as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Mitch Keller led in home run suppression (HR9+ 122 vs 90), skill-based run prevention (DICE+ 105 vs 94), and strikeout rate (K%+ 98 vs 90). Bob Macdonald held the edge in run prevention (ERA+ 101 vs 96). Role difference aside, Mitch Keller holds a clear edge on every meaningful shared measure.