Adam Peterson vs. Big Jeff Pfeffer — Career Comparison

On the career pitching numbers, Big Jeff Pfeffer posted a stronger line than Adam Peterson. Big Jeff Pfeffer posted stronger numbers in ERA (3.3 vs 5.46) and WHIP (1.368 vs 1.516). By the career numbers, Big Jeff Pfeffer 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.