Robert Keys vs. Tommy Thompson — Career Comparison

Looking at the career totals, Robert Keys and Tommy Thompson are fairly close on the surface numbers. Robert Keys posted stronger numbers in ERA (4.8 vs 6.06) and WHIP (1.593 vs 1.714). Tommy Thompson had the advantage in home runs allowed (0 per nine innings vs 0.47). By the career numbers, Robert Keys 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.