Charlie Butler vs. Esmerling Vasquez — Career Comparison

Looking at the career totals, Charlie Butler and Esmerling Vasquez are fairly close on the surface numbers. Esmerling Vasquez posted stronger numbers in ERA (4.86 vs 9) and WHIP (1.559 vs 3.000). Charlie Butler had the advantage in home runs allowed (0 per nine innings vs 0.75). By the career numbers, Esmerling Vasquez 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.