Brett Anderson vs. Rolla Mapel — Career Comparison

Looking at the career totals, Brett Anderson and Rolla Mapel are fairly close on the surface numbers. Brett Anderson posted stronger numbers in ERA (4.07 vs 4.5) and WHIP (1.345 vs 1.700). Rolla Mapel had the advantage in home runs allowed (0 per nine innings vs 0.91). By the career numbers, Brett Anderson 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.