Bill Butler vs. Roddery Muñoz — Career Comparison

On the career pitching numbers, Bill Butler posted a stronger line than Roddery Muñoz. Bill Butler posted stronger numbers in ERA (4.21 vs 6.73) and WHIP (1.479 vs 1.591). By the career numbers, Bill Butler 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.