John Barthold vs. Isidro Marquez — Career Comparison

Looking at the career totals, John Barthold and Isidro Marquez are fairly close on the surface numbers. John Barthold posted stronger numbers in ERA (5.06 vs 6.75) and home runs allowed (0 per nine innings vs 4.05). Isidro Marquez had the advantage in WHIP (1.650 vs 1.875). By the career numbers, John Barthold 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.