Bill Gallagher vs. Jack O'Connor — Career Comparison

On the career pitching numbers, Bill Gallagher posted a stronger line than Jack O'Connor. Bill Gallagher posted stronger numbers in ERA (4.7 vs 4.89) and WHIP (1.578 vs 1.657). By the career numbers, Bill Gallagher 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.