Jim Peterson vs. Jack Whillock — Career Comparison

Looking at the career totals, Jim Peterson and Jack Whillock are fairly close on the surface numbers. Jack Whillock posted stronger numbers in WHIP (1.500 vs 1.665) and home runs allowed (0 per nine innings vs 0.74). Jim Peterson had the advantage in ERA (5.27 vs 5.63). By the career numbers, Jack Whillock 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.