Zach Jackson vs. Garrett Stephenson — Career Comparison

On the career pitching numbers, Garrett Stephenson posted a stronger line than Zach Jackson. Garrett Stephenson posted stronger numbers in ERA (4.55 vs 5.81) and WHIP (1.388 vs 1.566). By the career numbers, Garrett Stephenson 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.