Babe Birrer vs. Charlie Kerfeld — Career Comparison

Looking at the career totals, Babe Birrer and Charlie Kerfeld are fairly close on the surface numbers. Charlie Kerfeld posted stronger numbers in ERA (4.2 vs 4.36) and home runs allowed (0.54 per nine innings vs 0.98). Babe Birrer had the advantage in WHIP (1.446 vs 1.572). By the career numbers, Charlie Kerfeld 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.