Greg Holland vs. Oliver Perez — Career Comparison

Oliver Perez built a career as a starting pitcher and Greg Holland as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Greg Holland led in home run suppression (HR9+ 165 vs 77), skill-based run prevention (DICE+ 105 vs 87), and run prevention (ERA+ 99 vs 91). Oliver Perez held the edge in strikeout rate (K%+ 131 vs 109). Role difference aside, Greg Holland holds a clear edge on every meaningful shared measure.