Bill Hallahan vs. Cliff Lee — Career Comparison

Looking at the career totals, Bill Hallahan and Cliff Lee are fairly close on the surface numbers. Cliff Lee posted stronger numbers in ERA (3.52 vs 4.03) and WHIP (1.202 vs 1.504). Bill Hallahan had the advantage in home runs allowed (0.37 per nine innings vs 0.93). By the career numbers, Cliff Lee 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.