Cy Acosta vs. Ken Penner — Career Comparison

Looking at the career totals, Cy Acosta and Ken Penner are fairly close on the surface numbers. Cy Acosta posted stronger numbers in ERA (2.66 vs 3.55) and WHIP (1.226 vs 1.500). Ken Penner had the advantage in home runs allowed (0.36 per nine innings vs 0.73). By the career numbers, Cy 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.