Adam Butler vs. John Glaiser — Career Comparison

On the career pitching numbers, John Glaiser posted a stronger line than Adam Butler. John Glaiser posted stronger numbers in ERA (4.91 vs 10.8) and WHIP (1.568 vs 2.400). By the career numbers, John Glaiser 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.