Santiago Casilla vs. Ethan Roberts — Career Comparison

On the career pitching numbers, Santiago Casilla posted a stronger line than Ethan Roberts. Santiago Casilla posted stronger numbers in ERA (3.29 vs 4.98) and WHIP (1.336 vs 1.592). By the career numbers, Santiago Casilla 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.