Lefty Hopper vs. Eric Yardley — Career Comparison

Looking at the career totals, Lefty Hopper and Eric Yardley are fairly close on the surface numbers. Eric Yardley posted stronger numbers in ERA (3.52 vs 4.91) and WHIP (1.491 vs 1.727). Lefty Hopper had the advantage in home runs allowed (0 per nine innings vs 1.01). By the career numbers, Eric Yardley 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.