Herbert Jackson vs. John Smoltz — Career Comparison

On the career pitching numbers, John Smoltz posted a stronger line than Herbert Jackson. John Smoltz posted stronger numbers in ERA (3.33 vs 5.73) and WHIP (1.200 vs 1.909). By the career numbers, John Smoltz 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.