Calvin Jones vs. Isidro Marquez — Career Comparison

On the career pitching numbers, Calvin Jones posted a stronger line than Isidro Marquez. Calvin Jones posted stronger numbers in ERA (4.33 vs 6.75) and WHIP (1.528 vs 1.650). By the career numbers, Calvin Jones 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.