Ethan Roberts vs. Jeff Zaske — Career Comparison

On the career pitching numbers, Jeff Zaske posted a stronger line than Ethan Roberts. Jeff Zaske posted stronger numbers in ERA (0 vs 4.98) and WHIP (1.000 vs 1.592). By the career numbers, Jeff Zaske 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.