Roberto Duran vs. Al Mays — Career Comparison

On the career pitching numbers, Al Mays posted a stronger line than Roberto Duran. Al Mays posted stronger numbers in ERA (3.91 vs 6.58) and WHIP (1.404 vs 1.846). By the career numbers, Al Mays 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.