Andy Boswell vs. John Doyle — Career Comparison

On the career pitching numbers, John Doyle posted a stronger line than Andy Boswell. John Doyle posted stronger numbers in ERA (2.63 vs 5.91) and WHIP (1.833 vs 1.969). By the career numbers, John Doyle 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.