Roric Harrison vs. John Jackson — Career Comparison

On the career pitching numbers, Roric Harrison posted a stronger line than John Jackson. Roric Harrison posted stronger numbers in ERA (4.24 vs 6) and WHIP (1.471 vs 2.019). By the career numbers, Roric Harrison 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.