Casey Janssen vs. Trevor Williams — Career Comparison

Trevor 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. Trevor Williams led in home run suppression (HR9+ 108 vs 85), run prevention (ERA+ 99 vs 87), and strikeout rate (K%+ 82 vs 76). Casey Janssen held the edge in walk avoidance (BB%+ 171 vs 105). Keeping the role difference in mind, the edge still goes to Trevor Williams.