Michael Kopech vs. Phil Nastu — Career Comparison

On the career pitching numbers, Michael Kopech posted a stronger line than Phil Nastu. Michael Kopech posted stronger numbers in ERA (4.14 vs 4.5) and WHIP (1.333 vs 1.553). By the career numbers, Michael Kopech 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.