David Peterson vs. Scott Sullivan — Career Comparison

David Peterson built a career as a starting pitcher and Scott Sullivan as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. David Peterson led in home run suppression (HR9+ 157 vs 95), skill-based run prevention (DICE+ 112 vs 95), and run prevention (ERA+ 110 vs 100). Scott Sullivan held the edge in walk avoidance (BB%+ 107 vs 81). Role difference aside, David Peterson holds a clear edge on every meaningful shared measure.