Mike Armstrong vs. Fuller Thompson — Career Comparison

Looking at the career totals, Mike Armstrong and Fuller Thompson are fairly close on the surface numbers. Fuller Thompson posted stronger numbers in ERA (3.86 vs 4.1) and home runs allowed (0 per nine innings vs 1.12). Mike Armstrong had the advantage in WHIP (1.405 vs 1.500). By the career numbers, Fuller Thompson 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.