Steve Dreyer vs. Masahiro Tanaka — Career Comparison

On the career pitching numbers, Masahiro Tanaka posted a stronger line than Steve Dreyer. Masahiro Tanaka posted stronger numbers in ERA (3.74 vs 5.71) and WHIP (1.131 vs 1.646). By the career numbers, Masahiro Tanaka 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.