Keith Atherton vs. Ed Mayer — Career Comparison

Looking at the career totals, Keith Atherton and Ed Mayer are fairly close on the surface numbers. Ed Mayer posted stronger numbers in WHIP (1.340 vs 1.407) and home runs allowed (0.57 per nine innings vs 1.19). Keith Atherton had the advantage in ERA (3.99 vs 4.31). By the career numbers, Ed Mayer 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.