Sonny Boy Jeffries vs. Wily Peralta — Career Comparison

On the career pitching numbers, Sonny Boy Jeffries posted a stronger line than Wily Peralta. Sonny Boy Jeffries posted stronger numbers in ERA (3.57 vs 4.29) and home runs allowed (0.4 per nine innings vs 1.09). 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.