Zach Jackson vs. Frank Tanana — Career Comparison

On the career pitching numbers, Frank Tanana posted a stronger line than Zach Jackson. Frank Tanana posted stronger numbers in ERA (3.66 vs 5.81) and WHIP (1.297 vs 1.566). By the career numbers, Frank Tanana 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.