Joe Cowley vs. Brad Hennessey — Career Comparison

Looking at the career totals, Joe Cowley and Brad Hennessey are fairly close on the surface numbers. Joe Cowley posted stronger numbers in ERA (4.2 vs 4.69) and WHIP (1.391 vs 1.508). Brad Hennessey had the advantage in home runs allowed (1.1 per nine innings vs 1.32). By the career numbers, Joe Cowley 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.