[3][4] Serving as a graduate assistant under Eustachy at Idaho, Irvin got his first coaching opportunity.
[5] In 2002, Irvin joined the coaching staff at Illinois State, and made subsequent stops at Texas A&M and Missouri under Melvin Watkins and Quin Snyder respectively.
[8][9] Irvin returned home to Chicago and assisted his brother Nick coaching the Morgan Park HS boys basketball team, while also serving as the school's dean of students.
[10][1] On August 7, 2018, Irvin was named the 13th head men's basketball coach in Chicago State history, replacing Tracy Dildy.
Brother Byron is a former NBA first round draft choice and three seasons in the NBA with the Portland Trail Blazers and Washington Bullets, while brothers Mac, Nick and sister Cynthia have all been involved in the Chicago basketball scene.