Pedro Martinez vs. Unknown Powell — Career Comparison

On the career pitching numbers, Pedro Martinez posted a stronger line than Unknown Powell. Pedro Martinez posted stronger numbers in ERA (2.93 vs 40.5) and WHIP (1.065 vs 7.500). By the career numbers, Pedro Martinez 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.