Jason Johnson vs. Seunghwan Oh — Career Comparison

Jason Johnson built a career as a starting pitcher and Seunghwan Oh as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Seunghwan Oh led in walk avoidance (BB%+ 159 vs 89), run prevention (ERA+ 158 vs 92), and skill-based run prevention (DICE+ 138 vs 90). Role difference aside, Seunghwan Oh holds a clear edge on every meaningful shared measure.