Leo Rosales vs. Zack Thompson — Career Comparison

Looking at the career totals, Leo Rosales and Zack Thompson are fairly close on the surface numbers. Zack Thompson posted stronger numbers in ERA (4.5 vs 5.01) and WHIP (1.356 vs 1.505). Leo Rosales had the advantage in home runs allowed (0.88 per nine innings vs 1.3). By the career numbers, Zack Thompson 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.