John Jackson vs. Emil Kush — Career Comparison

John Jackson built a career as a starting pitcher and Emil Kush as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Emil Kush posted stronger surface numbers — ERA 3.48 and WHIP 1.392 compared to 6 and 2.019 for John Jackson. By the career numbers, Emil Kush had the better of this cross-role comparison — though era context would sharpen the verdict.