Herbert Jackson vs. Donald Jarmon — Career Comparison

On the career pitching numbers, Herbert Jackson posted a stronger line than Donald Jarmon. Herbert Jackson posted stronger numbers in ERA (5.73 vs 11.37) and WHIP (1.909 vs 1.974). By the career numbers, Herbert Jackson 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.