Ronald Herrera vs. Eric Yardley — Career Comparison

Looking at the career totals, Ronald Herrera and Eric Yardley are fairly close on the surface numbers. Eric Yardley posted stronger numbers in ERA (3.52 vs 6) and home runs allowed (1.01 per nine innings vs 3). Ronald Herrera had the advantage in WHIP (1.333 vs 1.491). 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.