Jeremy Affeldt vs. Roberto Duran — Career Comparison

Looking at the career totals, Jeremy Affeldt and Roberto Duran are fairly close on the surface numbers. Jeremy Affeldt posted stronger numbers in ERA (3.97 vs 6.58) and WHIP (1.448 vs 1.846). Roberto Duran had the advantage in home runs allowed (0 per nine innings vs 0.74). By the career numbers, Jeremy Affeldt 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.