Jose Acosta vs. Walt Kellner — Career Comparison

Looking at the career totals, Jose Acosta and Walt Kellner are fairly close on the surface numbers. Jose Acosta posted stronger numbers in ERA (4.51 vs 6.43) and WHIP (1.561 vs 1.714). Walt Kellner had the advantage in home runs allowed (0 per nine innings vs 0.38). By the career numbers, Jose Acosta 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.