John Kirby vs. Luke Putkonen — Career Comparison

On the career pitching numbers, John Kirby posted a stronger line than Luke Putkonen. John Kirby posted stronger numbers in ERA (4.09 vs 4.66) and WHIP (1.469 vs 1.552). By the career numbers, John Kirby 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.