Ryan Cook vs. Slim McGrew — Career Comparison

Looking at the career totals, Ryan Cook and Slim McGrew are fairly close on the surface numbers. Ryan Cook posted stronger numbers in ERA (3.58 vs 6.6) and WHIP (1.272 vs 1.900). Slim McGrew had the advantage in home runs allowed (0.3 per nine innings vs 0.68). By the career numbers, Ryan Cook 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.