[2] Mullins was a four-year letterwinner at Southern Illinois for coach Chris Lowery where he was part of the Salukis' Sweet 16 run in the 2007 NCAA tournament.
[2] On March 20, 2019, Mullins was named the 14th head coach in Southern Illinois history, replacing Barry Hinson.
He was picked 2nd for Missouri Valley Conference coach of the year trailing Northern Iowa's Ben Jacobson.
[10] Twenty-four days after his departure from SIU Carbondale, he has named an assistant on Chris Holtmann's staff at DePaul University on April 1, 2024.
His father Mike is the founder of the Illinois Wolves AAU program, while his older brother Brendan is a former college basketball player at Saint Michael's College and assistant basketball coach at Southern Illinois Salukis.