Rudy Hernandez vs. William Zay — Career Comparison

Looking at the career totals, Rudy Hernandez and William Zay are fairly close on the surface numbers. Rudy Hernandez posted stronger numbers in ERA (4.12 vs 9) and WHIP (1.580 vs 4.000). William Zay had the advantage in home runs allowed (0 per nine innings vs 0.41). By the career numbers, Rudy Hernandez 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.