Al Jackson vs. Robert Keys — Career Comparison

Looking at the career totals, Al Jackson and Robert Keys are fairly close on the surface numbers. Al Jackson posted stronger numbers in ERA (3.98 vs 4.8) and WHIP (1.366 vs 1.593). Robert Keys had the advantage in home runs allowed (0.47 per nine innings vs 0.74). By the career numbers, Al Jackson 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.