Mike Greenfield has been Nebraska's head assistant coach for three seasons and an assistant coach for four after spending his first three seasons as Nebraska's strength and conditioning coach.
Since Greenfield arrived at NU before the 2002-03 season, the Huskers are 107-27-3 in dual competition and Nebraska has finished in the top five at the NCAA Championships three times, including fourth-place showings in 2008 and 2009. Husker wrestlers have earned 20 All-America honors during his time on the staff, including three national titles. NU also claimed its first ever Big 12 wrestling title in 2009 under Greenfield.
Before coming to Nebraska, Greenfield served as a graduate assistant wrestling coach at Central Michigan for four seasons. He also served as a graduate assistant in the physical education department, after competing for Coach Tom Borelli and the Chippewas. Greenfield finished eighth at the 1998 NCAA Championships at 177 pounds and seventh in 1999 at 184 pounds to earn a pair of All-America honors. He was a three-time Mid-American Conference champion and owned a career record of 108-39. At the time of his graduation, Greenfield ranked seventh all-time in Chippewa history with his 108 wins and his career-winning percentage of .735 placed him 11th in school history.
Greenfield is a 2001 graduate of Central Michigan with a degree in physical education. He and his wife, Melissa, have one daughter, Madelyn.