Doug Fister vs. Sonny Boy Jeffries — Career Comparison

Looking at the career totals, Doug Fister and Sonny Boy Jeffries are fairly close on the surface numbers. Sonny Boy Jeffries posted stronger numbers in ERA (3.57 vs 3.72) and home runs allowed (0.4 per nine innings vs 0.89). Doug Fister had the advantage in WHIP (1.267 vs 1.412). 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.