Zack Greinke vs. John Wetteland — Career Comparison

Zack Greinke built a career as a starting pitcher and John Wetteland as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. John Wetteland led in strikeout rate (K%+ 134 vs 81), skill-based run prevention (DICE+ 110 vs 95), and run prevention (ERA+ 106 vs 99). Zack Greinke held the edge in walk avoidance (BB%+ 162 vs 113). Keeping the role difference in mind, the edge still goes to John Wetteland.