J. A. Happ vs. Tom Johnson — Career Comparison

J. A. Happ built a career as a starting pitcher and Tom Johnson as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Tom Johnson led in walk avoidance (BB%+ 144 vs 95), home run suppression (HR9+ 116 vs 80), and skill-based run prevention (DICE+ 115 vs 88). Role difference aside, Tom Johnson holds a clear edge on every meaningful shared measure.