Bryan Mitchell vs. Herb Pennock — Career Comparison

On the career pitching numbers, Herb Pennock posted a stronger line than Bryan Mitchell. Herb Pennock posted stronger numbers in ERA (3.6 vs 5.13) and WHIP (1.348 vs 1.700). By the career numbers, Herb Pennock 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.