Carlos Frias vs. Jim Hayes — Career Comparison

Looking at the career totals, Carlos Frias and Jim Hayes are fairly close on the surface numbers. Carlos Frias posted stronger numbers in ERA (4.5 vs 8.36) and WHIP (1.395 vs 2.179). Jim Hayes had the advantage in home runs allowed (0 per nine innings vs 0.87). By the career numbers, Carlos Frias 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.