John Gilroy vs. Lee Guetterman — Career Comparison

On the career pitching numbers, Lee Guetterman posted a stronger line than John Gilroy. Lee Guetterman posted stronger numbers in ERA (4.33 vs 6.23) and WHIP (1.489 vs 2.031). By the career numbers, Lee Guetterman 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.