Frank Allen vs. Jimmy Key — Career Comparison

Looking at the career totals, Frank Allen and Jimmy Key are fairly close on the surface numbers. Frank Allen posted stronger numbers in ERA (2.93 vs 3.51) and home runs allowed (0.24 per nine innings vs 0.88). Jimmy Key had the advantage in WHIP (1.241 vs 1.305). By the career numbers, Frank Allen 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.