Len Barker vs. Luis Perez — Career Comparison

Len Barker built a career as a starting pitcher and Luis Perez as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Len Barker led in strikeout rate (K%+ 141 vs 100), home run suppression (HR9+ 144 vs 117), and skill-based run prevention (DICE+ 118 vs 100). Luis Perez held the edge in walk avoidance (BB%+ 97 vs 93). Role difference aside, Len Barker holds a clear edge on every meaningful shared measure.