Marcus Gwyn vs. Mike Koplove — Career Comparison

On the career pitching numbers, Mike Koplove posted a stronger line than Marcus Gwyn. Mike Koplove posted stronger numbers in ERA (3.82 vs 11.81) and WHIP (1.386 vs 2.625). By the career numbers, Mike Koplove 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.