Don Cooper vs. Rex Smith — Career Comparison

Looking at the career totals, Don Cooper and Rex Smith are fairly close on the surface numbers. Don Cooper posted stronger numbers in ERA (5.27 vs 5.5) and WHIP (1.723 vs 2.111). Rex Smith had the advantage in home runs allowed (0 per nine innings vs 1.48). By the career numbers, Don Cooper 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.