Don Aase vs. Casey Fossum — Career Comparison

Casey Fossum built a career as a starting pitcher and Don Aase as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Casey Fossum led in strikeout rate (K%+ 115 vs 90), skill-based run prevention (DICE+ 96 vs 88), and run prevention (ERA+ 94 vs 87). Role difference aside, Casey Fossum holds a clear edge on every meaningful shared measure.