Joe Kostal vs. Aaron Northcraft — Career Comparison

Looking at the career totals, Joe Kostal and Aaron Northcraft are fairly close on the surface numbers. Joe Kostal posted stronger numbers in ERA (0 vs 2.25) and home runs allowed (0 per nine innings vs 1.13). Aaron Northcraft had the advantage in WHIP (1.625 vs 2.000). By the career numbers, Joe Kostal 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.