Don Brennan vs. Dennis Cook — Career Comparison

Looking at the career totals, Don Brennan and Dennis Cook are fairly close on the surface numbers. Dennis Cook posted stronger numbers in ERA (3.91 vs 4.19) and WHIP (1.373 vs 1.552). Don Brennan had the advantage in home runs allowed (0.32 per nine innings vs 1.16). By the career numbers, Dennis Cook 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.