Jimmy Key vs. Jesse Petty — Career Comparison

Looking at the career totals, Jimmy Key and Jesse Petty are fairly close on the surface numbers. Jimmy Key posted stronger numbers in ERA (3.51 vs 3.68) and WHIP (1.241 vs 1.309). Jesse Petty had the advantage in home runs allowed (0.57 per nine innings vs 0.88). By the career numbers, Jimmy Key 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.