Willie Collazo vs. Bill Stemmyer — Career Comparison

Looking at the career totals, Willie Collazo and Bill Stemmyer are fairly close on the surface numbers. Bill Stemmyer posted stronger numbers in ERA (3.67 vs 6.35) and WHIP (1.388 vs 2.294). Willie Collazo had the advantage in home runs allowed (0 per nine innings vs 0.27). By the career numbers, Bill Stemmyer 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.