John Poloni vs. Jim Roberts — Career Comparison

Looking at the career totals, John Poloni and Jim Roberts are fairly close on the surface numbers. John Poloni posted stronger numbers in ERA (6.43 vs 7.18) and WHIP (1.286 vs 1.899). Jim Roberts had the advantage in home runs allowed (0.34 per nine innings vs 1.29). By the career numbers, John Poloni 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.