Al Jackson vs. John McCloskey — Career Comparison

Looking at the career totals, Al Jackson and John McCloskey are fairly close on the surface numbers. John McCloskey posted stronger numbers in ERA (3.6 vs 3.98) and home runs allowed (0.36 per nine innings vs 0.74). Al Jackson had the advantage in WHIP (1.366 vs 1.520). By the career numbers, John McCloskey 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.