Carlos Guevara vs. Ryan Rolison — Career Comparison

Looking at the career totals, Carlos Guevara and Ryan Rolison are fairly close on the surface numbers. Carlos Guevara posted stronger numbers in ERA (5.84 vs 7.02) and home runs allowed (1.46 per nine innings vs 2.34). Ryan Rolison had the advantage in WHIP (1.772 vs 1.946). By the career numbers, Carlos Guevara 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.