Ernest Groth vs. Zac Rosscup — Career Comparison

Looking at the career totals, Ernest Groth and Zac Rosscup are fairly close on the surface numbers. Ernest Groth posted stronger numbers in ERA (4.91 vs 5.09) and WHIP (1.227 vs 1.673). Zac Rosscup had the advantage in home runs allowed (1.66 per nine innings vs 2.45). By the career numbers, Ernest Groth 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.