Unknown Bookman vs. Tommy Thompson — Career Comparison

On the career pitching numbers, Tommy Thompson posted a stronger line than Unknown Bookman. Tommy Thompson posted stronger numbers in ERA (6.06 vs 27) and WHIP (1.714 vs 4.500). By the career numbers, Tommy Thompson 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.