Bill Hallahan vs. Donald Jarmon — Career Comparison

On the career pitching numbers, Bill Hallahan posted a stronger line than Donald Jarmon. Bill Hallahan posted stronger numbers in ERA (4.03 vs 11.37) and WHIP (1.504 vs 1.974). By the career numbers, Bill Hallahan 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.