Unknown Clark vs. Sandy Koufax — Career Comparison

Looking at the career totals, Unknown Clark and Sandy Koufax are fairly close on the surface numbers. Sandy Koufax posted stronger numbers in ERA (2.76 vs 7.5) and WHIP (1.127 vs 1.500). Unknown Clark had the advantage in home runs allowed (0 per nine innings vs 0.79). By the career numbers, Sandy Koufax 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.