Jason Jennings vs. Charlie Sproull — Career Comparison

Looking at the career totals, Jason Jennings and Charlie Sproull are fairly close on the surface numbers. Jason Jennings posted stronger numbers in ERA (4.95 vs 5.94) and WHIP (1.594 vs 1.826). Charlie Sproull had the advantage in home runs allowed (0.69 per nine innings vs 1.09). By the career numbers, Jason 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.