David Aardsma vs. Luis Perdomo — Career Comparison

Luis Perdomo built a career as a starting pitcher and David Aardsma as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. David Aardsma led in strikeout rate (K%+ 120 vs 78), run prevention (ERA+ 109 vs 84), and skill-based run prevention (DICE+ 99 vs 93). Luis Perdomo held the edge in walk avoidance (BB%+ 103 vs 76). Role difference aside, David Aardsma holds a clear edge on every meaningful shared measure.