Edwin Diaz vs. Cal Quantrill — Career Comparison

Cal Quantrill built a career as a starting pitcher and Edwin Diaz as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Edwin Diaz led in strikeout rate (K%+ 155 vs 82), skill-based run prevention (DICE+ 140 vs 93), and run prevention (ERA+ 139 vs 101). Cal Quantrill held the edge in walk avoidance (BB%+ 107 vs 103). Role difference aside, Edwin Diaz holds a clear edge on every meaningful shared measure.