Jeff Carter vs. Carson Spiers — Career Comparison

On the career pitching numbers, Jeff Carter posted a stronger line than Carson Spiers. Jeff Carter posted stronger numbers in ERA (5.25 vs 5.69) and WHIP (1.083 vs 1.573). By the career numbers, Jeff Carter 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.