Chuck Hartenstein vs. Ed O'Neil — Career Comparison

Looking at the career totals, Chuck Hartenstein and Ed O'Neil are fairly close on the surface numbers. Chuck Hartenstein posted stronger numbers in ERA (4.52 vs 9.26) and WHIP (1.438 vs 2.294). Ed O'Neil had the advantage in home runs allowed (0 per nine innings vs 1.03). By the career numbers, Chuck Hartenstein 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.