Fred Hayner vs. Rolla Mapel — Career Comparison

Rolla Mapel built a career as a starting pitcher and Fred Hayner as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Rolla Mapel posted stronger surface numbers — ERA 4.5 and WHIP 1.700 compared to 13.5 and 3.000 for Fred Hayner. By the career numbers, Rolla Mapel had the better of this cross-role comparison — though era context would sharpen the verdict.