Eric Yardley vs. Ryan Zeferjahn — Career Comparison

Looking at the career totals, Eric Yardley and Ryan Zeferjahn are fairly close on the surface numbers. Eric Yardley posted stronger numbers in ERA (3.52 vs 4.14) and home runs allowed (1.01 per nine innings vs 1.46). Ryan Zeferjahn had the advantage in WHIP (1.365 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.