Max Castillo vs. Dennis Leonard — Career Comparison

On the career pitching numbers, Dennis Leonard posted a stronger line than Max Castillo. Dennis Leonard posted stronger numbers in ERA (3.7 vs 5.43) and WHIP (1.279 vs 1.391). By the career numbers, Dennis Leonard 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.