Jason Grilli vs. John Halama — Career Comparison

John Halama 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. John Halama led in walk avoidance (BB%+ 129 vs 89), run prevention (ERA+ 105 vs 83), and home run suppression (HR9+ 97 vs 81). Jason Grilli held the edge in strikeout rate (K%+ 100 vs 76). Role difference aside, John Halama holds a clear edge on every meaningful shared measure.