John Halama vs. Armando López — Career Comparison

Looking at the career totals, John Halama and Armando López are fairly close on the surface numbers. John Halama posted stronger numbers in ERA (4.65 vs 6.62) and WHIP (1.474 vs 1.918). Armando López had the advantage in home runs allowed (0.65 per nine innings vs 1.12). By the career numbers, John Halama 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.