Hayden Harris vs. Slim McGrew — Career Comparison

On the career pitching numbers, Hayden Harris posted a stronger line than Slim McGrew. Hayden Harris posted stronger numbers in ERA (3.38 vs 6.6) and home runs allowed (0 per nine innings vs 0.3). By the career numbers, Hayden Harris 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.