Casey Janssen vs. David Williams — Career Comparison

David Williams 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. David Williams led in run prevention (ERA+ 108 vs 87), home run suppression (HR9+ 91 vs 85), and strikeout rate (K%+ 80 vs 76). Casey Janssen held the edge in walk avoidance (BB%+ 171 vs 85). Keeping the role difference in mind, the edge still goes to David Williams.