Frank Castillo vs. Tommy Thompson — Career Comparison

Looking at the career totals, Frank Castillo and Tommy Thompson are fairly close on the surface numbers. Frank Castillo posted stronger numbers in ERA (4.56 vs 6.06) and WHIP (1.378 vs 1.714). Tommy Thompson had the advantage in home runs allowed (0 per nine innings vs 1.07). By the career numbers, Frank Castillo 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.