Isidro Marquez vs. John McGraw — Career Comparison

On the career pitching numbers, John McGraw posted a stronger line than Isidro Marquez. John McGraw posted stronger numbers in ERA (0 vs 6.75) and WHIP (0.000 vs 1.650). By the career numbers, John McGraw 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.