Fred Hayner vs. Jimmy Mayo — Career Comparison

Jimmy Mayo 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. Jimmy Mayo posted stronger surface numbers — ERA 2.81 and WHIP 1.563 compared to 13.5 and 3.000 for Fred Hayner. By the career numbers, Jimmy Mayo had the better of this cross-role comparison — though era context would sharpen the verdict.