Aaron Bummer vs. John Mitchell — Career Comparison

John Mitchell built a career as a starting pitcher and Aaron Bummer as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Aaron Bummer led in home run suppression (HR9+ 237 vs 173), strikeout rate (K%+ 112 vs 68), and skill-based run prevention (DICE+ 138 vs 105). John Mitchell held the edge in walk avoidance (BB%+ 104 vs 102). Role difference aside, Aaron Bummer holds a clear edge on every meaningful shared measure.