Aurelio Lopez vs. Ethan Roberts — Career Comparison

On the career pitching numbers, Aurelio Lopez posted a stronger line than Ethan Roberts. Aurelio Lopez posted stronger numbers in ERA (3.56 vs 4.98) and WHIP (1.309 vs 1.592). By the career numbers, Aurelio Lopez 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.