Willie Ferrell vs. Carson Spiers — Career Comparison

On the career pitching numbers, Willie Ferrell posted a stronger line than Carson Spiers. Willie Ferrell posted stronger numbers in ERA (4.5 vs 5.69) and WHIP (1.463 vs 1.573). By the career numbers, Willie Ferrell 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.