Craig Lefferts vs. Ethan Roberts — Career Comparison

On the career pitching numbers, Craig Lefferts posted a stronger line than Ethan Roberts. Craig Lefferts posted stronger numbers in ERA (3.43 vs 4.98) and WHIP (1.296 vs 1.592). By the career numbers, Craig Lefferts 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.