Seth Halvorsen vs. Al Jackson — Career Comparison

Al Jackson built a career as a starting pitcher and Seth Halvorsen as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Al Jackson posted stronger surface numbers — ERA 3.98 and WHIP 1.366 compared to 4.15 and 1.404 for Seth Halvorsen. By the career numbers, Al Jackson had the better of this cross-role comparison — though era context would sharpen the verdict.