Willie Collazo vs. Mardie Cornejo — Career Comparison

Looking at the career totals, Willie Collazo and Mardie Cornejo are fairly close on the surface numbers. Mardie Cornejo posted stronger numbers in ERA (2.45 vs 6.35) and WHIP (1.527 vs 2.294). Willie Collazo had the advantage in home runs allowed (0 per nine innings vs 0.25). By the career numbers, Mardie Cornejo 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.