Willie Collazo vs. Michael Kirkman — Career Comparison

Looking at the career totals, Willie Collazo and Michael Kirkman are fairly close on the surface numbers. Michael Kirkman posted stronger numbers in ERA (5.28 vs 6.35) and WHIP (1.569 vs 2.294). Willie Collazo had the advantage in home runs allowed (0 per nine innings vs 0.99). By the career numbers, Michael Kirkman 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.