John Allen vs. Aaron Crow — Career Comparison

Looking at the career totals, John Allen and Aaron Crow are fairly close on the surface numbers. Aaron Crow posted stronger numbers in ERA (3.43 vs 18) and WHIP (1.357 vs 2.000). John Allen had the advantage in home runs allowed (0 per nine innings vs 1.08). By the career numbers, Aaron Crow 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.