Mark Leiter vs. Clayton Mortensen — Career Comparison

Mark Leiter built a career as a starting pitcher and Clayton Mortensen as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Mark Leiter led in strikeout rate (K%+ 107 vs 85), walk avoidance (BB%+ 105 vs 87), and home run suppression (HR9+ 80 vs 63). Clayton Mortensen held the edge in run prevention (ERA+ 106 vs 92). Role difference aside, Mark Leiter holds a clear edge on every meaningful shared measure.