David Aardsma vs. Clayton Lambert — Career Comparison

Looking at the career totals, David Aardsma and Clayton Lambert are fairly close on the surface numbers. David Aardsma had the edge in ERA (4.27 vs 5.4). By the career numbers, David Aardsma 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.