Rafael Perez vs. Ben Rivera — Career Comparison

Ben Rivera built a career as a starting pitcher and Rafael Perez as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Rafael Perez led in home run suppression (HR9+ 175 vs 95), walk avoidance (BB%+ 120 vs 76), and run prevention (ERA+ 135 vs 97). Ben Rivera held the edge in strikeout rate (K%+ 110 vs 100). Role difference aside, Rafael Perez holds a clear edge on every meaningful shared measure.