Al Mahon vs. Jeff Zimmerman — Career Comparison

Looking at the career totals, Al Mahon and Jeff Zimmerman are fairly close on the surface numbers. Jeff Zimmerman posted stronger numbers in ERA (3.27 vs 22.85) and WHIP (1.120 vs 4.154). Al Mahon had the advantage in home runs allowed (0 per nine innings vs 1.14). By the career numbers, Jeff Zimmerman 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.