David Aardsma vs. Raleigh Aitchison — Career Comparison

Raleigh Aitchison 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. Raleigh Aitchison posted stronger surface numbers — ERA 3.01 and WHIP 1.260 compared to 4.27 and 1.487 for David Aardsma. By the career numbers, Raleigh Aitchison had the better of this cross-role comparison — though era context would sharpen the verdict.