Alek Jacob vs. Frank Killen — Career Comparison

Looking at the career totals, Alek Jacob and Frank Killen are fairly close on the surface numbers. Frank Killen posted stronger numbers in ERA (3.78 vs 4.06) and home runs allowed (0.2 per nine innings vs 1.24). Alek Jacob had the advantage in WHIP (1.216 vs 1.414). 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.