Haddie Gill vs. Jack O'Connor — Career Comparison

Looking at the career totals, Haddie Gill and Jack O'Connor are fairly close on the surface numbers. Haddie Gill posted stronger numbers in ERA (0 vs 4.89) and home runs allowed (0 per nine innings vs 1.02). Jack O'Connor had the advantage in WHIP (1.657 vs 2.000). By the career numbers, Haddie Gill 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.