Michael Kopech vs. Rube Waddell — Career Comparison

On the career pitching numbers, Rube Waddell posted a stronger line than Michael Kopech. Rube Waddell posted stronger numbers in ERA (2.16 vs 4.14) and WHIP (1.102 vs 1.333). By the career numbers, Rube Waddell 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.