Onan Masaoka vs. Zac Rosscup — Career Comparison

On the career pitching numbers, Onan Masaoka posted a stronger line than Zac Rosscup. Onan Masaoka posted stronger numbers in ERA (4.23 vs 5.09) and WHIP (1.537 vs 1.673). By the career numbers, Onan Masaoka 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.