Rolando Arrojo vs. John Brown — Career Comparison

On the career pitching numbers, John Brown posted a stronger line than Rolando Arrojo. John Brown posted stronger numbers in ERA (2.29 vs 4.55) and WHIP (1.236 vs 1.407). By the career numbers, John Brown 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.