John O'Donoghue vs. Leon Williams — Career Comparison

Looking at the career totals, John O'Donoghue and Leon Williams are fairly close on the surface numbers. John O'Donoghue posted stronger numbers in ERA (4.58 vs 5.4) and WHIP (1.678 vs 2.160). Leon Williams had the advantage in home runs allowed (0 per nine innings vs 1.83). By the career numbers, John O'Donoghue 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.