Paul Castner vs. Aaron Scheffer — Career Comparison

Looking at the career totals, Paul Castner and Aaron Scheffer are fairly close on the surface numbers. Aaron Scheffer had the edge in ERA (1.93 vs 6.3). By the career numbers, Aaron Scheffer 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.