Cannon Ball Miller vs. Robin Roberts — Career Comparison

On the career pitching numbers, Cannon Ball Miller posted a stronger line than Robin Roberts. Cannon Ball Miller posted stronger numbers in ERA (1.17 vs 3.41) and WHIP (1.022 vs 1.184). By the career numbers, Cannon Ball Miller 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.