Christian Bergman vs. John Lackey — Career Comparison

On the career pitching numbers, John Lackey posted a stronger line than Christian Bergman. John Lackey posted stronger numbers in ERA (3.92 vs 5.59) and WHIP (1.306 vs 1.493). By the career numbers, John Lackey 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.