David Aardsma vs. Bob Barr — Career Comparison

Looking at the career totals, David Aardsma and Bob Barr are fairly close on the surface numbers. Bob Barr posted stronger numbers in ERA (3.86 vs 4.27) and home runs allowed (0 per nine innings vs 1.09). David Aardsma had the advantage in WHIP (1.487 vs 3.000). By the career numbers, Bob Barr had the better of this comparison — though ERA and WHIP alone don't account for era, park factors, or the defenses each pitcher worked behind.