David Aardsma vs. Carlos Velazquez — Career Comparison

Looking at the career totals, David Aardsma and Carlos Velazquez are fairly close on the surface numbers. Carlos Velazquez had the edge in ERA (2.58 vs 4.27). By the career numbers, Carlos Velazquez 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.