David Aardsma vs. Mel Parnell — Career Comparison

Mel Parnell 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. Mel Parnell posted stronger surface numbers — ERA 3.5 and WHIP 1.413 compared to 4.27 and 1.487 for David Aardsma. By the career numbers, Mel Parnell had the better of this cross-role comparison — though era context would sharpen the verdict.