John McCarty vs. Justin Shafer — Career Comparison

On the career pitching numbers, John McCarty posted a stronger line than Justin Shafer. John McCarty posted stronger numbers in ERA (3.91 vs 4.7) and home runs allowed (0.3 per nine innings vs 1.51). By the career numbers, John McCarty 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.