Antonio Alfonseca vs. John Allen — Career Comparison

Looking at the career totals, Antonio Alfonseca and John Allen are fairly close on the surface numbers. Antonio Alfonseca posted stronger numbers in ERA (4.11 vs 18) and WHIP (1.586 vs 2.000). John Allen had the advantage in home runs allowed (0 per nine innings vs 0.81). By the career numbers, Antonio Alfonseca 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.