Unknown Hayes vs. Eric Yardley — Career Comparison

Looking at the career totals, Unknown Hayes and Eric Yardley are fairly close on the surface numbers. Unknown Hayes posted stronger numbers in WHIP (1.385 vs 1.491) and home runs allowed (0 per nine innings vs 1.01). Eric Yardley had the advantage in ERA (3.52 vs 6.23). By the career numbers, Unknown Hayes 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.