Bill Castro vs. Hipolito Peña — Career Comparison

On the career pitching numbers, Bill Castro posted a stronger line than Hipolito Peña. Bill Castro posted stronger numbers in ERA (3.33 vs 4.84) and WHIP (1.375 vs 1.572). By the career numbers, Bill Castro 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.