Luis Castillo vs. Steve Kline — Career Comparison

Looking at the career totals, Luis Castillo and Steve Kline are fairly close on the surface numbers. Steve Kline posted stronger numbers in ERA (3.26 vs 5.06) and WHIP (1.221 vs 1.969). Luis Castillo had the advantage in home runs allowed (0 per nine innings vs 0.73). By the career numbers, Steve Kline 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.