Jimmy Nelson vs. Gregg Olson — Career Comparison

Jimmy Nelson built a career as a starting pitcher and Gregg Olson as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Gregg Olson led in home run suppression (HR9+ 150 vs 119), run prevention (ERA+ 118 vs 105), and skill-based run prevention (DICE+ 110 vs 108). Jimmy Nelson held the edge in strikeout rate (K%+ 105 vs 105). Role difference aside, Gregg Olson holds a clear edge on every meaningful shared measure.