Willie Collazo vs. Allan Simpson — Career Comparison

Looking at the career totals, Willie Collazo and Allan Simpson are fairly close on the surface numbers. Allan Simpson posted stronger numbers in ERA (6.06 vs 6.35) and WHIP (1.694 vs 2.294). Willie Collazo had the advantage in home runs allowed (0 per nine innings vs 0.92). By the career numbers, Allan Simpson 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.