Rogelio Armenteros vs. Billy Campbell — Career Comparison

On the career pitching numbers, Billy Campbell posted a stronger line than Rogelio Armenteros. Billy Campbell posted stronger numbers in ERA (2.8 vs 4) and home runs allowed (0.07 per nine innings vs 0.5). By the career numbers, Billy Campbell 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.