Bob Hartman vs. Slim McGrew — Career Comparison

On the career pitching numbers, Bob Hartman posted a stronger line than Slim McGrew. Bob Hartman posted stronger numbers in ERA (5.21 vs 6.6) and WHIP (1.579 vs 1.900). By the career numbers, Bob Hartman 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.