Luther Hackman vs. Bill Koski — Career Comparison

Looking at the career totals, Luther Hackman and Bill Koski are fairly close on the surface numbers. Luther Hackman posted stronger numbers in ERA (5.09 vs 6.67) and WHIP (1.590 vs 2.000). Bill Koski had the advantage in home runs allowed (0.67 per nine innings vs 1.1). By the career numbers, Luther Hackman 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.