Roy Thomas vs. Jordan Zimmerman — Career Comparison

Looking at the career totals, Roy Thomas and Jordan Zimmerman are fairly close on the surface numbers. Roy Thomas posted stronger numbers in ERA (3.82 vs 7.88) and WHIP (1.455 vs 2.250). Jordan Zimmerman had the advantage in home runs allowed (0 per nine innings vs 0.71). By the career numbers, Roy Thomas 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.