William Brennan vs. Tommy Thompson — Career Comparison

Looking at the career totals, William Brennan and Tommy Thompson are fairly close on the surface numbers. Tommy Thompson posted stronger numbers in WHIP (1.714 vs 1.849) and home runs allowed (0 per nine innings vs 0.74). William Brennan had the advantage in ERA (5.18 vs 6.06). By the career numbers, Tommy 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.