Unknown Hamilton vs. Jim Roberts — Career Comparison

Looking at the career totals, Unknown Hamilton and Jim Roberts are fairly close on the surface numbers. Jim Roberts posted stronger numbers in ERA (7.18 vs 8.1) and WHIP (1.899 vs 2.400). Unknown Hamilton had the advantage in home runs allowed (0 per nine innings vs 0.34). By the career numbers, Jim Roberts 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.