Zach Jackson vs. Don Songer — Career Comparison

Zach Jackson built a career as a starting pitcher and Don Songer as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Don Songer posted stronger surface numbers — ERA 3.38 and WHIP 1.493 compared to 5.81 and 1.566 for Zach Jackson. By the career numbers, Don Songer had the better of this cross-role comparison — though era context would sharpen the verdict.