John Costello vs. Bailey Falter — Career Comparison

Bailey Falter 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 95), strikeout rate (K%+ 99 vs 74), and home run suppression (HR9+ 115 vs 100). Bailey Falter held the edge in walk avoidance (BB%+ 94 vs 91). Role difference aside, John Costello holds a clear edge on every meaningful shared measure.