Don Brennan vs. W. Williams — Career Comparison

Looking at the career totals, Don Brennan and W. Williams are fairly close on the surface numbers. Don Brennan posted stronger numbers in ERA (4.19 vs 6.35) and WHIP (1.552 vs 1.765). W. Williams had the advantage in home runs allowed (0 per nine innings vs 0.32). By the career numbers, Don Brennan 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.