Unknown Atkinson vs. Erik Swanson — Career Comparison

Looking at the career totals, Unknown Atkinson and Erik Swanson are fairly close on the surface numbers. Unknown Atkinson posted stronger numbers in WHIP (1.000 vs 1.154) and home runs allowed (0 per nine innings vs 1.66). Erik Swanson had the advantage in ERA (4.2 vs 4.5). By the career numbers, Unknown Atkinson 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.