Brian O'Connor vs. John Schreiber — Career Comparison

On the career pitching numbers, John Schreiber posted a stronger line than Brian O'Connor. John Schreiber posted stronger numbers in ERA (3.65 vs 5.11) and WHIP (1.263 vs 1.865). By the career numbers, John Schreiber 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.