A native of Richmond, Virginia, Warren attended Thomas Jefferson High School and during his time there became a nationally ranked player.
[5] In the 1990 McDonald's All-American Boys Game he scored 4 points shooting 1 for 4 from the field and 2 for 2 from the free throw line.
[6] Already during his junior year of high school Warren had expressed his will to play for Virginia Commonwealth University,[1] and he committed to VCU in 1990, after his McDonald's All-American selection.
He played for London Towers in the 2000–2001 British Basketball League, and he was selected in the All-Star team thanks to his 20.7 points per game.
He won the 2001–02 Finnish league with the Espoon Honka, and then played in England for 3 more seasons before ending his career with Hermine Nantes in the LNB Pro B.