Rube Fischer vs. Mitch Keller — Career Comparison

Looking at the career totals, Rube Fischer and Mitch Keller are fairly close on the surface numbers. Mitch Keller posted stronger numbers in ERA (4.51 vs 5.1) and WHIP (1.384 vs 1.667). Rube Fischer had the advantage in home runs allowed (0.47 per nine innings vs 1.06). By the career numbers, Mitch Keller 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.