Jim Henderson vs. Jackson Kowar — Career Comparison

On the career pitching numbers, Jim Henderson posted a stronger line than Jackson Kowar. Jim Henderson posted stronger numbers in ERA (3.61 vs 8.21) and WHIP (1.285 vs 1.934). By the career numbers, Jim Henderson 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.