Juan Perez vs. Mason Thompson — Career Comparison

Looking at the career totals, Juan Perez and Mason Thompson are fairly close on the surface numbers. Juan Perez posted stronger numbers in ERA (4.25 vs 5.21) and WHIP (1.466 vs 1.667). Mason Thompson had the advantage in home runs allowed (0.87 per nine innings vs 1.21). By the career numbers, Juan Perez 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.