Mike Hagen led the Indian Hills Men's Golf program through its most historic era as the Warriors captured four National Junior College Athletic Association (NJCAA) National Championships – 2011, 2012, 2014, and 2015. Throughout Hagen's tenure in Ottumwa, the Warriors earned eight top-five finishes at the national championship. Hagen was selected as the NJCAA National Coach of the Year on four separate occasions and the Dave Williams National Coach of the Year three times.

Hagen's ability to lead his student-athletes resulted in 19 NJCAA All-Americans as well as 12 PING All-American selections. The Warriors first-ever individual national champion came under Hagen's watch as Brad Smith took home medalist honors in 2006.

Hagen, who also served as the Indian Hills Athletic Director for six years, was inducted into the NJCAA Golf Hall of Fame in 2014 and the Golf Coaches Association Hall of Fame in 2019.

Following his time at Indian Hills, Hagen took over as the head coach at Arkansas State University where he has bolstered the program into a national contender since 2015. The Red Wolves have put together three NCAA Championship appearances, 19 tournament championships, and the 2019 Sun Belt Conference Championship while boasting a .761 overall winning percentage.