Fuller Thompson vs. Bill Upton — Career Comparison

Looking at the career totals, Fuller Thompson and Bill Upton are fairly close on the surface numbers. Bill Upton posted stronger numbers in ERA (1.8 vs 3.86) and WHIP (1.400 vs 1.500). Fuller Thompson had the advantage in home runs allowed (0 per nine innings vs 1.8). By the career numbers, Bill Upton 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.