Mike Armstrong vs. Mark Leiter — Career Comparison

Mark Leiter built a career as a starting pitcher and Mike Armstrong as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Mike Armstrong led in run prevention (ERA+ 110 vs 92), home run suppression (HR9+ 95 vs 80), and skill-based run prevention (DICE+ 97 vs 93). Mark Leiter held the edge in walk avoidance (BB%+ 105 vs 90). Keeping the role difference in mind, the edge still goes to Mike Armstrong.