Corey Kluber vs. Herb Pennock — Career Comparison

Looking at the career totals, Corey Kluber and Herb Pennock are fairly close on the surface numbers. Corey Kluber posted stronger numbers in ERA (3.44 vs 3.6) and WHIP (1.135 vs 1.348). Herb Pennock had the advantage in home runs allowed (0.32 per nine innings vs 0.97). By the career numbers, Corey Kluber 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.