Dennis Leonard vs. Sean Marshall — Career Comparison

Dennis Leonard built a career as a starting pitcher and Sean Marshall as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Sean Marshall led in home run suppression (HR9+ 114 vs 87), run prevention (ERA+ 107 vs 98), and skill-based run prevention (DICE+ 109 vs 100). Dennis Leonard held the edge in strikeout rate (K%+ 107 vs 99). Keeping the role difference in mind, the edge still goes to Sean Marshall.