Sonny Boy Jeffries vs. Zack Wheeler — Career Comparison

Looking at the career totals, Sonny Boy Jeffries and Zack Wheeler are fairly close on the surface numbers. Zack Wheeler posted stronger numbers in ERA (3.28 vs 3.57) and WHIP (1.145 vs 1.412). Sonny Boy Jeffries had the advantage in home runs allowed (0.4 per nine innings vs 0.86). By the career numbers, Zack Wheeler 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.