Brian O'Connor vs. Rich Thompson — Career Comparison

On the career pitching numbers, Rich Thompson posted a stronger line than Brian O'Connor. Rich Thompson posted stronger numbers in ERA (4.21 vs 5.11) and WHIP (1.357 vs 1.865). By the career numbers, Rich Thompson 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.