David Aardsma vs. Michael Lorenzen — Career Comparison

Michael Lorenzen 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 84), home run suppression (HR9+ 114 vs 92), and skill-based run prevention (DICE+ 99 vs 87). Michael Lorenzen held the edge in walk avoidance (BB%+ 91 vs 76). Role difference aside, David Aardsma holds a clear edge on every meaningful shared measure.