Lefty Boone vs. Philip Humber — Career Comparison

Looking at the career totals, Lefty Boone and Philip Humber are fairly close on the surface numbers. Philip Humber posted stronger numbers in ERA (5.31 vs 5.87) and WHIP (1.442 vs 1.638). Lefty Boone had the advantage in home runs allowed (0.2 per nine innings vs 1.29). By the career numbers, Philip Humber 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.