Fred Heimach vs. Sonny Boy Jeffries — Career Comparison

Looking at the career totals, Fred Heimach and Sonny Boy Jeffries are fairly close on the surface numbers. Sonny Boy Jeffries had the edge in ERA (3.57 vs 4.46). By the career numbers, Sonny Boy Jeffries 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.