John Costello vs. Rich Hand — Career Comparison

Rich Hand built a career as a starting pitcher and John Costello as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. John Costello led in run prevention (ERA+ 135 vs 94), home run suppression (HR9+ 115 vs 81), and walk avoidance (BB%+ 91 vs 71). Rich Hand held the edge in strikeout rate (K%+ 106 vs 99). Role difference aside, John Costello holds a clear edge on every meaningful shared measure.