Yilber Díaz vs. Roger Salmon — Career Comparison

Looking at the career totals, Yilber Díaz and Roger Salmon are fairly close on the surface numbers. Yilber Díaz posted stronger numbers in ERA (4.31 vs 9) and WHIP (1.468 vs 2.200). Roger Salmon had the advantage in home runs allowed (0 per nine innings vs 0.86). By the career numbers, Yilber Díaz 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.