Born in Milwaukee, WI, Carter played as a freshman on the varsity team of Alonzo A. Crim High School in Atlanta.

The Rocky Mountain News quoted Carter stating: "The dope man would put up the money, and we would play.

[5][6][7] The failure allowed the team to renounce their rights to Carter, opening up cap space that was later used to sign Lamar Odom.

[10] On December 20, 2007, Carter hit a runner in the lane with 0.8 seconds left in double overtime against the Houston Rockets, which gave the Nuggets a 112–111 win.

[14] Considered a throw-in in the trade, Carter forever cemented his place in Knicks lore when he nearly singlehandedly rallied New York to a playoff victory in an elimination game against the Boston Celtics on April 24, 2011.

Carter substituted into the game with the Knicks trailing by 23 and brought life back to the Garden by suffocating Rajon Rondo on defense, scoring 11 points, and dishing four dimes.

[19] In September 2013, Carter was named an assistant coach with the Austin Spurs of the NBA Development League.

While Carter was in fifth grade at Atlanta's Fred A. Toomer Elementary School, his class was adopted by the "I Have a Dream" foundation.