Casey Janssen vs. Bob Welch — Career Comparison

Bob Welch built a career as a starting pitcher and Casey Janssen as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Casey Janssen led in walk avoidance (BB%+ 171 vs 106), skill-based run prevention (DICE+ 94 vs 90), and home run suppression (HR9+ 85 vs 81). Bob Welch held the edge in run prevention (ERA+ 107 vs 87). Keeping the role difference in mind, the edge still goes to Casey Janssen.