Josh Osich vs. Roberto Rivera — Career Comparison

Looking at the career totals, Josh Osich and Roberto Rivera are fairly close on the surface numbers. Roberto Rivera posted stronger numbers in ERA (4.5 vs 5.02) and home runs allowed (1.5 per nine innings vs 1.84). Josh Osich had the advantage in WHIP (1.405 vs 1.583). By the career numbers, Roberto Rivera 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.