Michael Schwimer vs. Lefty Willis — Career Comparison

On the career pitching numbers, Lefty Willis posted a stronger line than Michael Schwimer. Lefty Willis posted stronger numbers in ERA (3.92 vs 4.62) and home runs allowed (0.56 per nine innings vs 0.92). By the career numbers, Lefty Willis 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.