Alek Jacob vs. Len Perme — Career Comparison

Looking at the career totals, Alek Jacob and Len Perme are fairly close on the surface numbers. Len Perme posted stronger numbers in ERA (3.12 vs 4.06) and home runs allowed (0 per nine innings vs 1.24). Alek Jacob had the advantage in WHIP (1.216 vs 1.269). By the career numbers, Len Perme 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.