Hank Mason vs. Allan Simpson — Career Comparison

On the career pitching numbers, Allan Simpson posted a stronger line than Hank Mason. Allan Simpson posted stronger numbers in ERA (6.06 vs 10.13) and WHIP (1.694 vs 2.250). By the career numbers, Allan Simpson 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.