Paul Castner vs. Daniel Schlereth — Career Comparison

Looking at the career totals, Paul Castner and Daniel Schlereth are fairly close on the surface numbers. Daniel Schlereth posted stronger numbers in ERA (4.35 vs 6.3) and WHIP (1.667 vs 1.900). Paul Castner had the advantage in home runs allowed (0 per nine innings vs 1.16). By the career numbers, Daniel Schlereth 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.