Alek Jacob vs. Jeff Karstens — Career Comparison

Jeff Karstens built a career as a starting pitcher and Alek Jacob as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Alek Jacob posted stronger surface numbers — ERA 4.06 and WHIP 1.216 compared to 4.44 and 1.362 for Jeff Karstens. By the career numbers, Alek Jacob had the better of this cross-role comparison — though era context would sharpen the verdict.