Casey Janssen vs. Daisuke Matsuzaka — Career Comparison

Daisuke Matsuzaka 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. Daisuke Matsuzaka led in strikeout rate (K%+ 131 vs 76), home run suppression (HR9+ 130 vs 85), and run prevention (ERA+ 117 vs 87). Casey Janssen held the edge in walk avoidance (BB%+ 171 vs 73). Role difference aside, Daisuke Matsuzaka holds a clear edge on every meaningful shared measure.