Lefty Boone vs. Max Castillo — Career Comparison

Looking at the career totals, Lefty Boone and Max Castillo are fairly close on the surface numbers. Max Castillo posted stronger numbers in ERA (5.43 vs 5.87) and WHIP (1.391 vs 1.638). Lefty Boone had the advantage in home runs allowed (0.2 per nine innings vs 1.51). By the career numbers, Max 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.