Ryan Rolison vs. Ace Williams — Career Comparison

Looking at the career totals, Ryan Rolison and Ace Williams are fairly close on the surface numbers. Ryan Rolison posted stronger numbers in ERA (7.02 vs 16) and WHIP (1.772 vs 3.889). Ace Williams had the advantage in home runs allowed (0 per nine innings vs 2.34). By the career numbers, Ryan Rolison 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.