Manny Aybar vs. Michael Kirkman — Career Comparison

Looking at the career totals, Manny Aybar and Michael Kirkman are fairly close on the surface numbers. Manny Aybar had the edge in ERA (5.11 vs 5.28). By the career numbers, Manny Aybar 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.