Michael Kopech vs. Frank Wills — Career Comparison

Michael Kopech built a career as a starting pitcher and Frank Wills as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Frank Wills led in walk avoidance (BB%+ 101 vs 58), skill-based run prevention (DICE+ 94 vs 78), and home run suppression (HR9+ 92 vs 83). Michael Kopech held the edge in run prevention (ERA+ 95 vs 81). Keeping the role difference in mind, the edge still goes to Frank Wills.