Sonny Boy Jeffries vs. Ismael Valdez — Career Comparison

Looking at the career totals, Sonny Boy Jeffries and Ismael Valdez are fairly close on the surface numbers. Sonny Boy Jeffries posted stronger numbers in ERA (3.57 vs 4.09) and home runs allowed (0.4 per nine innings vs 1.15). Ismael Valdez had the advantage in WHIP (1.332 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.