Bret Prinz vs. A. J. Puk — Career Comparison

On the career pitching numbers, A. J. Puk posted a stronger line than Bret Prinz. A. J. Puk posted stronger numbers in ERA (3.53 vs 4.89) and WHIP (1.225 vs 1.674). By the career numbers, A. J. Puk 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.