Thomas Hatch vs. Oscar Villarreal — Career Comparison

On the career pitching numbers, Oscar Villarreal posted a stronger line than Thomas Hatch. Oscar Villarreal posted stronger numbers in ERA (3.86 vs 5.24) and WHIP (1.443 vs 1.621). By the career numbers, Oscar Villarreal 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.