Antonio Alfonseca vs. William McCarthy — Career Comparison

Looking at the career totals, Antonio Alfonseca and William McCarthy are fairly close on the surface numbers. Antonio Alfonseca posted stronger numbers in ERA (4.11 vs 9) and WHIP (1.586 vs 2.500). William McCarthy 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.