Junior Guerra vs. Joel Zumaya — Career Comparison

Junior Guerra built a career as a starting pitcher and Joel Zumaya as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Joel Zumaya led in home run suppression (HR9+ 280 vs 123), run prevention (ERA+ 187 vs 124), and skill-based run prevention (DICE+ 150 vs 105). Role difference aside, Joel Zumaya holds a clear edge on every meaningful shared measure.