Bill Castro vs. Junior Guerra — Career Comparison

Junior Guerra built a career as a starting pitcher and Bill Castro as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Junior Guerra led in strikeout rate (K%+ 101 vs 66), home run suppression (HR9+ 123 vs 111), and run prevention (ERA+ 124 vs 113). Bill Castro held the edge in walk avoidance (BB%+ 140 vs 91). Role difference aside, Junior Guerra holds a clear edge on every meaningful shared measure.