Frank Killen vs. Rex Smith — Career Comparison

Looking at the career totals, Frank Killen and Rex Smith are fairly close on the surface numbers. Frank Killen posted stronger numbers in ERA (3.78 vs 5.5) and WHIP (1.414 vs 2.111). Rex Smith had the advantage in home runs allowed (0 per nine innings vs 0.2). By the career numbers, Frank Killen 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.