Jim Johnson vs. Wily Peralta — Career Comparison

Wily Peralta built a career as a starting pitcher and Jim Johnson as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Jim Johnson led in home run suppression (HR9+ 103 vs 88), walk avoidance (BB%+ 104 vs 93), and skill-based run prevention (DICE+ 92 vs 87). Wily Peralta held the edge in run prevention (ERA+ 91 vs 85). Role difference aside, Jim Johnson holds a clear edge on every meaningful shared measure.