Roger Clemens vs. Erik Swanson — Career Comparison

Roger Clemens built a career as a starting pitcher and Erik Swanson as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Erik Swanson led in walk avoidance (BB%+ 152 vs 94), run prevention (ERA+ 130 vs 116), and skill-based run prevention (DICE+ 115 vs 115). Roger Clemens held the edge in strikeout rate (K%+ 143 vs 109). Keeping the role difference in mind, the edge still goes to Erik Swanson.