Jose Acosta vs. Charlie Kerfeld — Career Comparison

Looking at the career totals, Jose Acosta and Charlie Kerfeld are fairly close on the surface numbers. Charlie Kerfeld had the edge in ERA (4.2 vs 4.51). By the career numbers, Charlie Kerfeld 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.