Michael Kopech vs. Erv Lange — Career Comparison

On the career pitching numbers, Erv Lange posted a stronger line than Michael Kopech. Erv Lange posted stronger numbers in ERA (2.23 vs 4.14) and WHIP (1.142 vs 1.333). By the career numbers, Erv Lange 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.