Casey Janssen vs. Jose Mercedes — Career Comparison

Jose Mercedes 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. Jose Mercedes led in home run suppression (HR9+ 111 vs 85), run prevention (ERA+ 108 vs 87), and strikeout rate (K%+ 82 vs 76). Casey Janssen held the edge in walk avoidance (BB%+ 171 vs 99). Role difference aside, Jose Mercedes holds a clear edge on every meaningful shared measure.