John Brown vs. Yilber Díaz — Career Comparison

On the career pitching numbers, John Brown posted a stronger line than Yilber Díaz. John Brown posted stronger numbers in ERA (2.29 vs 4.31) and WHIP (1.236 vs 1.468). 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.