Kelvin Herrera vs. Donald Jarmon — Career Comparison

Donald Jarmon built a career as a starting pitcher and Kelvin Herrera as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Kelvin Herrera posted stronger surface numbers — ERA 3.21 and WHIP 1.236 compared to 11.37 and 1.974 for Donald Jarmon. By the career numbers, Kelvin Herrera had the better of this cross-role comparison — though era context would sharpen the verdict.