Zach McAllister vs. Slim McGrew — Career Comparison

Looking at the career totals, Zach McAllister and Slim McGrew are fairly close on the surface numbers. Zach McAllister posted stronger numbers in ERA (4.15 vs 6.6) and WHIP (1.412 vs 1.900). Slim McGrew had the advantage in home runs allowed (0.3 per nine innings vs 1.07). By the career numbers, Zach McAllister 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.