Unknown O'Rourke vs. Adrian Zabala — Career Comparison

Looking at the career totals, Unknown O'Rourke and Adrian Zabala are fairly close on the surface numbers. Adrian Zabala posted stronger numbers in ERA (5.02 vs 8) and WHIP (1.423 vs 2.000). Unknown O'Rourke had the advantage in home runs allowed (0 per nine innings vs 0.75). By the career numbers, Adrian Zabala 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.