Al Jackson vs. Bill Kalfass — Career Comparison

Looking at the career totals, Al Jackson and Bill Kalfass are fairly close on the surface numbers. Bill Kalfass posted stronger numbers in ERA (3 vs 3.98) and home runs allowed (0 per nine innings vs 0.74). Al Jackson had the advantage in WHIP (1.366 vs 1.667). By the career numbers, Bill Kalfass 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.