Joe Boyle vs. Rube Walberg — Career Comparison

On the career pitching numbers, Rube Walberg posted a stronger line than Joe Boyle. Rube Walberg posted stronger numbers in ERA (4.16 vs 4.98) and home runs allowed (0.55 per nine innings vs 0.86). By the career numbers, Rube Walberg 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.