Unknown Hamilton vs. Lefty Robinson — Career Comparison

On the career pitching numbers, Lefty Robinson posted a stronger line than Unknown Hamilton. Lefty Robinson posted stronger numbers in ERA (6.95 vs 8.1) and WHIP (1.728 vs 2.400). By the career numbers, Lefty Robinson 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.