John Malarkey vs. Jim Peterson — Career Comparison

On the career pitching numbers, John Malarkey posted a stronger line than Jim Peterson. John Malarkey posted stronger numbers in ERA (3.64 vs 5.27) and WHIP (1.512 vs 1.665). By the career numbers, John Malarkey 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.