Jack Armstrong vs. Rheal Cormier — Career Comparison

Jack Armstrong built a career as a starting pitcher and Rheal Cormier as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Rheal Cormier led in walk avoidance (BB%+ 152 vs 91), run prevention (ERA+ 99 vs 89), and skill-based run prevention (DICE+ 91 vs 89). Jack Armstrong held the edge in strikeout rate (K%+ 103 vs 79). Keeping the role difference in mind, the edge still goes to Rheal Cormier.