Fernando Arroyo vs. Unknown Hamilton — Career Comparison

Looking at the career totals, Fernando Arroyo and Unknown Hamilton are fairly close on the surface numbers. Fernando Arroyo posted stronger numbers in ERA (4.44 vs 8.1) and WHIP (1.423 vs 2.400). Unknown Hamilton had the advantage in home runs allowed (0 per nine innings vs 0.94). By the career numbers, Fernando Arroyo 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.