Jason Anderson vs. Kent Mercker — Career Comparison

On the career pitching numbers, Kent Mercker posted a stronger line than Jason Anderson. Kent Mercker posted stronger numbers in ERA (4.16 vs 6.39) and WHIP (1.480 vs 1.974). By the career numbers, Kent Mercker 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.