Frank Keffer vs. Minnie Rojas — Career Comparison

Looking at the career totals, Frank Keffer and Minnie Rojas are fairly close on the surface numbers. Minnie Rojas posted stronger numbers in ERA (3 vs 5.63) and WHIP (1.284 vs 1.500). Frank Keffer had the advantage in home runs allowed (0 per nine innings vs 0.93). By the career numbers, Minnie Rojas 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.