Roberto Rivera vs. Jeff Wallace — Career Comparison

Looking at the career totals, Roberto Rivera and Jeff Wallace are fairly close on the surface numbers. Jeff Wallace posted stronger numbers in ERA (4.2 vs 4.5) and home runs allowed (0.72 per nine innings vs 1.5). Roberto Rivera had the advantage in WHIP (1.583 vs 1.745). By the career numbers, Jeff Wallace 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.