Dan Jennings vs. Willard Mains — Career Comparison

Looking at the career totals, Dan Jennings and Willard Mains are fairly close on the surface numbers. Dan Jennings posted stronger numbers in ERA (3.1 vs 3.53) and WHIP (1.486 vs 1.550). Willard Mains had the advantage in home runs allowed (0.17 per nine innings vs 0.65). By the career numbers, Dan Jennings 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.