D. J. Mitchell vs. Lou Polli — Career Comparison

Looking at the career totals, D. J. Mitchell and Lou Polli are fairly close on the surface numbers. Lou Polli posted stronger numbers in WHIP (1.843 vs 2.143) and home runs allowed (0.64 per nine innings vs 1.93). D. J. Mitchell had the advantage in ERA (3.86 vs 4.68). By the career numbers, Lou Polli 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.