David Aardsma vs. Scott Olsen — Career Comparison

Scott Olsen 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 home run suppression (HR9+ 114 vs 84), strikeout rate (K%+ 120 vs 103), and run prevention (ERA+ 109 vs 99). Scott Olsen held the edge in walk avoidance (BB%+ 89 vs 76). Role difference aside, David Aardsma holds a clear edge on every meaningful shared measure.