Jack Flaherty vs. Aaron Heilman — Career Comparison

Jack Flaherty built a career as a starting pitcher and Aaron Heilman 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 run prevention (ERA+ 117 vs 77), home run suppression (HR9+ 105 vs 68), and skill-based run prevention (DICE+ 114 vs 83). Aaron Heilman held the edge in walk avoidance (BB%+ 100 vs 100). Role difference aside, Jack Flaherty holds a clear edge on every meaningful shared measure.