John Stuper vs. Erik Swanson — Career Comparison

John Stuper 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 92), strikeout rate (K%+ 109 vs 68), and run prevention (ERA+ 130 vs 106). John Stuper held the edge in home run suppression (HR9+ 120 vs 95). Role difference aside, Erik Swanson holds a clear edge on every meaningful shared measure.