Jose Mercedes vs. Cotton Williams — Career Comparison

On the career pitching numbers, Cotton Williams posted a stronger line than Jose Mercedes. Cotton Williams posted stronger numbers in ERA (4.62 vs 4.75) and home runs allowed (0.25 per nine innings vs 1.16). By the career numbers, Cotton Williams 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.