Jack Aker vs. Aaron Northcraft — Career Comparison

Looking at the career totals, Jack Aker and Aaron Northcraft are fairly close on the surface numbers. Jack Aker posted stronger numbers in WHIP (1.369 vs 1.625) and home runs allowed (0.77 per nine innings vs 1.13). Aaron Northcraft had the advantage in ERA (2.25 vs 3.28). By the career numbers, Jack Aker 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.