Darold Knowles vs. Mauricio Robles — Career Comparison

Looking at the career totals, Darold Knowles and Mauricio Robles are fairly close on the surface numbers. Mauricio Robles posted stronger numbers in ERA (1.93 vs 3.12) and home runs allowed (0 per nine innings vs 0.54). Darold Knowles had the advantage in WHIP (1.439 vs 2.143). By the career numbers, Mauricio Robles 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.