Preston Guilmet vs. Zac Rosscup — Career Comparison

On the career pitching numbers, Zac Rosscup posted a stronger line than Preston Guilmet. Zac Rosscup posted stronger numbers in ERA (5.09 vs 9) and home runs allowed (1.66 per nine innings vs 2.83). By the career numbers, Zac Rosscup 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.