Jason Grilli vs. Merrill Kelly — Career Comparison

Merrill Kelly built a career as a starting pitcher and Jason Grilli as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Merrill Kelly led in run prevention (ERA+ 114 vs 83), home run suppression (HR9+ 111 vs 81), and skill-based run prevention (DICE+ 107 vs 85). Jason Grilli held the edge in strikeout rate (K%+ 100 vs 100). Role difference aside, Merrill Kelly holds a clear edge on every meaningful shared measure.