Jim Sullivan vs. Dale Thayer — Career Comparison

Looking at the career totals, Jim Sullivan and Dale Thayer are fairly close on the surface numbers. Dale Thayer posted stronger numbers in ERA (3.47 vs 5.52) and WHIP (1.264 vs 1.950). Jim Sullivan had the advantage in home runs allowed (0.37 per nine innings vs 1.07). By the career numbers, Dale Thayer 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.