Don Aase vs. Jack Flaherty — Career Comparison

Jack Flaherty 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. Jack Flaherty led in strikeout rate (K%+ 127 vs 90), run prevention (ERA+ 117 vs 87), and skill-based run prevention (DICE+ 114 vs 88). Role difference aside, Jack Flaherty holds a clear edge on every meaningful shared measure.