Willie Collazo vs. Isidro Marquez — Career Comparison

Looking at the career totals, Willie Collazo and Isidro Marquez are fairly close on the surface numbers. Willie Collazo posted stronger numbers in ERA (6.35 vs 6.75) and home runs allowed (0 per nine innings vs 4.05). Isidro Marquez had the advantage in WHIP (1.650 vs 2.294). By the career numbers, Willie Collazo 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.