Willie Collazo vs. Tom Sullivan — Career Comparison

Looking at the career totals, Willie Collazo and Tom Sullivan are fairly close on the surface numbers. Tom Sullivan posted stronger numbers in ERA (4.04 vs 6.35) and WHIP (1.534 vs 2.294). Willie Collazo had the advantage in home runs allowed (0 per nine innings vs 0.26). By the career numbers, Tom Sullivan 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.