Keith Butler vs. Connie Grob — Career Comparison

On the career pitching numbers, Keith Butler posted a stronger line than Connie Grob. Keith Butler posted stronger numbers in ERA (6.14 vs 7.83) and WHIP (1.409 vs 1.866). By the career numbers, Keith 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.