Jimmy Key vs. J. J. Putz — Career Comparison

Jimmy Key built a career as a starting pitcher and J. J. Putz as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. J. J. Putz led in strikeout rate (K%+ 119 vs 90), skill-based run prevention (DICE+ 121 vs 102), and home run suppression (HR9+ 109 vs 93). Jimmy Key held the edge in walk avoidance (BB%+ 151 vs 130). Role difference aside, J. J. Putz holds a clear edge on every meaningful shared measure.