Michael Kopech vs. Al Olmsted — Career Comparison

On the career pitching numbers, Al Olmsted posted a stronger line than Michael Kopech. Al Olmsted posted stronger numbers in ERA (2.86 vs 4.14) and home runs allowed (0.52 per nine innings vs 1.45). By the career numbers, Al Olmsted 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.