Brian Keyser vs. Rosario Rodriguez — Career Comparison

Looking at the career totals, Brian Keyser and Rosario Rodriguez are fairly close on the surface numbers. Rosario Rodriguez posted stronger numbers in ERA (4.8 vs 4.97) and WHIP (1.533 vs 1.684). Brian Keyser had the advantage in home runs allowed (0.77 per nine innings vs 1.2). By the career numbers, Rosario Rodriguez 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.