John McPherson vs. Jake Peavy — Career Comparison

Looking at the career totals, John McPherson and Jake Peavy are fairly close on the surface numbers. Jake Peavy posted stronger numbers in ERA (3.63 vs 3.89) and WHIP (1.213 vs 1.417). John McPherson had the advantage in home runs allowed (0.07 per nine innings vs 0.98). By the career numbers, Jake Peavy 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.