Stan Coveleski vs. Michael Kopech — Career Comparison

On the career pitching numbers, Stan Coveleski posted a stronger line than Michael Kopech. Stan Coveleski posted stronger numbers in ERA (2.89 vs 4.14) and WHIP (1.251 vs 1.333). By the career numbers, Stan Coveleski 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.