Bill Koski vs. Matt Perisho — Career Comparison

Looking at the career totals, Bill Koski and Matt Perisho are fairly close on the surface numbers. Matt Perisho posted stronger numbers in ERA (6.39 vs 6.67) and WHIP (1.866 vs 2.000). Bill Koski had the advantage in home runs allowed (0.67 per nine innings vs 1.37). By the career numbers, Matt Perisho 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.