Yohan Ramirez vs. Roberto Rivera — Career Comparison

Looking at the career totals, Yohan Ramirez and Roberto Rivera are fairly close on the surface numbers. Yohan Ramirez posted stronger numbers in WHIP (1.423 vs 1.583) and home runs allowed (1.07 per nine innings vs 1.5). Roberto Rivera had the advantage in ERA (4.5 vs 4.71). By the career numbers, Yohan Ramirez 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.