Hisashi Iwakuma vs. Zach Jackson — Career Comparison

On the career pitching numbers, Hisashi Iwakuma posted a stronger line than Zach Jackson. Hisashi Iwakuma posted stronger numbers in ERA (3.42 vs 5.81) and WHIP (1.158 vs 1.566). By the career numbers, Hisashi Iwakuma 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.