Ray Callahan vs. Greg Hansell — Career Comparison

Looking at the career totals, Ray Callahan and Greg Hansell are fairly close on the surface numbers. Greg Hansell posted stronger numbers in ERA (5.56 vs 8.53) and WHIP (1.547 vs 2.053). Ray Callahan had the advantage in home runs allowed (1.42 per nine innings vs 1.63). By the career numbers, Greg Hansell 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.