Mike Foltynewicz vs. Jeff Kaiser — Career Comparison

Mike Foltynewicz built a career as a starting pitcher and Jeff Kaiser as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Mike Foltynewicz posted stronger surface numbers — ERA 4.52 and WHIP 1.327 compared to 9.17 and 2.308 for Jeff Kaiser. By the career numbers, Mike Foltynewicz had the better of this cross-role comparison — though era context would sharpen the verdict.