Warfield picked up alto saxophone when he was nine years old, and switched to tenor when he was a teenager. After a short period at Howard University he became a jazz musician full-time. He worked with Marlon Jordan, the Tough Young Tenors, and Jazz Futures in the early 1990s, and played with Shirley Scott in the house band for Bill Cosby's show You Bet Your Life. Later in the 1990s he worked with Jimmy Smith and Christian McBride; other associations include work with Donald Byrd, Michele Rosewoman, Dizzy Gillespie, Isaac hayes, Charles Fambrough, Orrin Evans, Joey Defrancesco, and Danilo Perez. His releases as a leader include Jazz Is... (Criss Cross Jazz, 1997), which included Clarence Penn, Cyrus Chestnut, Nicholas Payton, Stefon Harris, and Tarus Mateen as sidemen.