Dan Jennings vs. Jim Sullivan — Career Comparison

Looking at the career totals, Dan Jennings and Jim Sullivan are fairly close on the surface numbers. Dan Jennings posted stronger numbers in ERA (3.1 vs 5.52) and WHIP (1.486 vs 1.950). Jim Sullivan had the advantage in home runs allowed (0.37 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.