Mike Foltynewicz vs. Jeff Keener — Career Comparison

Mike Foltynewicz built a career as a starting pitcher and Jeff Keener as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Jeff Keener posted stronger surface numbers — ERA 2.7 and WHIP 1.838 compared to 4.52 and 1.327 for Mike Foltynewicz. By the career numbers, Jeff Keener had the better of this cross-role comparison — though era context would sharpen the verdict.