Edgar first coached at New Mexico Military Institute in 1978. Nolan Richardson hired him as one of his first assistants at the University of Tulsa in 1980, his first position in Division I. Edgar followed Richardson to Arkansas in 1985 and continued as Richardson's assistant until getting his first head coaching position at Murray State in 1991. He led the Racers to two NCAA tournament appearances in four seasons.
In 1995, Edgar accepted the head coaching position at Duquesne. He was unable to turn the Duquesne Dukes around, however, and was let go after three seasons. From 1999 to 2001, Edgar was director of basketball operations at TCU under Billy Tubbs.[2] Edgar returned to coaching in 2002 at UAB under Mike Anderson, where he helped UAB qualify for the 2003 NIT quarterfinals and 2004 NCAA tournament Sweet 16.[2] In the 2005–06 season, Edgar was on Bruce Pearl's staff on a Tennessee team that won the Southeast Conference East Division title.[3]
On April 13, 2006, Edgar was named head coach at Southeast Missouri State.[3] This position brought him back to the Ohio Valley Conference (OVC), where he started with Murray State. Edgar had success in the OVC, with a 65-27 conference record, winning three regular season championships, two tournament championships, and two coach of the year awards, all with Murray State University.
On October 9, 2008, Southeast Missouri State fired athletic director Don Kaverman and suspended Edgar after the NCAA notified the university of possible major violations, three months after both the men's and women's basketball programs were placed on two years' probation by the NCAA.[4][5] On December 31, 2008, new athletic director John Shafer fired Edgar and bought out the final two years of Edgar's contract.[6][7] The NCAA investigation concluded in August 2009 and found that impermissible tuition payments and violations of rules about summer conditioning activities and observing pickup games happened under Edgar's watch; Edgar's appeal was rejected in June 2010.[8]
National champion
Postseason invitational champion
Conference regular season champion
Conference regular season and conference tournament champion
Division regular season champion
Division regular season and conference tournament champion
Conference tournament champion
* 11 wins (including six conference wins) were vacated from the 2007–08 season due to NCAA violations.[11] The original season record was 12–19 (7–13, 9th in OVC).[12]
