William Parson vs. Joakim Soria — Career Comparison

On the career pitching numbers, Joakim Soria posted a stronger line than William Parson. Joakim Soria posted stronger numbers in ERA (3.11 vs 4.92) and WHIP (1.156 vs 1.856). By the career numbers, Joakim Soria 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.