Mike Greisl returned in 2019 as an assistant men's and women's swimming coach at Mount Union.
Greisl was an assistant coach with the Purple Raiders from 2014 to 2016 then spent two years as an assistant coach at NCAA Division II Limestone College in Gaffney, South Carolina. While at Limestone, Greisl coached a pair of All-Americans.
He was also a four-year letterwinner in the pool at Mount Union as he was a five-time All-Ohio Athletic Conference honoree and part of four school records in relay events along with the school record in the 200 Freestyle.
A native of South Euclid, Ohio, and a graduate of Notre Dame Cathedral Latin High School, he holds a bachelor's degree in Sport Business from Mount Union.