Willie Collazo vs. Dave Leiper — Career Comparison

Looking at the career totals, Willie Collazo and Dave Leiper are fairly close on the surface numbers. Dave Leiper posted stronger numbers in ERA (3.98 vs 6.35) and WHIP (1.486 vs 2.294). Willie Collazo had the advantage in home runs allowed (0 per nine innings vs 0.81). By the career numbers, Dave Leiper 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.