Jack Armstrong vs. Lance McCullers — Career Comparison

Jack Armstrong built a career as a starting pitcher and Lance McCullers as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Lance McCullers led in run prevention (ERA+ 127 vs 89), strikeout rate (K%+ 118 vs 103), and skill-based run prevention (DICE+ 98 vs 89). Jack Armstrong held the edge in walk avoidance (BB%+ 91 vs 85). Role difference aside, Lance McCullers holds a clear edge on every meaningful shared measure.