Brian O'Connor vs. Billy Smith — Career Comparison

On the career pitching numbers, Billy Smith posted a stronger line than Brian O'Connor. Billy Smith posted stronger numbers in ERA (3.05 vs 5.11) and WHIP (1.161 vs 1.865). By the career numbers, Billy Smith 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.