Born in Silver Spring, Maryland, Warren played collegiately at Mount St. Mary's University from 1986 to 1990.

As a senior in 1989–90, he averaged 10.4 points and 5.0 assists per game, while leading The Mount to its first winning season at the Division I level.

Warren was a part of the coaching staff that led the Yellow Jackets to the 2004 national championship game, losing to UConn.

In Warren's second year, the Dolphins pulled off the biggest turnaround in the country – improving from one win to a 15–14 record and a third-place finish in the Atlantic Sun Conference.

[2] In 2009–10, the Dolphins returned to the NIT and faced the top-seeded Arizona State Sun Devils in the first round.

They were invited to the 2011 CollegeInsider.com Tournament, Jacksonville defeated East Carolina before falling to SMU in the second round.