Hersh Freeman vs. Jack O'Connor — Career Comparison

On the career pitching numbers, Hersh Freeman posted a stronger line than Jack O'Connor. Hersh Freeman posted stronger numbers in ERA (3.74 vs 4.89) and WHIP (1.443 vs 1.657). By the career numbers, Hersh Freeman 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.