Joe Boyle vs. A. J. Burnett — Career Comparison

On the career pitching numbers, A. J. Burnett posted a stronger line than Joe Boyle. A. J. Burnett posted stronger numbers in ERA (3.99 vs 4.98) and WHIP (1.338 vs 1.444). By the career numbers, A. J. Burnett 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.