Tommy Atkins vs. Oliver Perez — Career Comparison

On the career pitching numbers, Tommy Atkins posted a stronger line than Oliver Perez. Tommy Atkins posted stronger numbers in ERA (2.86 vs 4.37) and WHIP (1.381 vs 1.459). By the career numbers, Tommy Atkins 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.