Brown began his high school career at Columbia High School, where he averaged 18 points and 5 assists per game as a junior. He was playing a video game when his father, Cedric Brown suffered a heart attack, requiring emergency stent surgery. At the time, Columbia was competing in the Georgia AAAA state playoffs, and Brown was limited by a back injury, resulting in a loss in the championship game. As a senior, he transferred to Tucker High School. Brown was a three-star recruit, the number 70 shooting guard in the 247sports rankings. He committed to Auburn.
College career
Brown posted 10.1 points per game as a freshman at Auburn. As a sophomore, Brown averaged 7.5 points per game. He increased his scoring to 15.9 points per game as a junior, shooting 40.1 percent from the field and 38.2 percent from 3-point range. Brown was the first team All-SEC selection by the Associated Press and second team selection by the coaches. After the season, Brown declared for the 2018 NBA draft but did not hire an agent to preserve his collegiate eligibility. On May 29, he announced his return to Auburn, citing "unfinished business." A a senior, Brown averaged 15.9 points per game and became Auburn's program leader in made 3-pointers. He scored 34 points in a game against Dayton. Brown was named to the Second Team All-SEC at the conclusion of the regular season. He helped lead Auburn to the Final Four and had 12 points in the 63–62 loss to Virginia.
Following his performance in the summer league, he was signed as an affiliate player to the Maine Red Claws, the G League team owned by the Boston Celtics. On December 7, 2019, Brown hit a franchise record 11 out of 11 three pointers for the Red Claws in a 128-123 loss to the Delaware Blue Coats. When the G League season was suspended on March 12, 2020, Brown was averaging 16.1 points, 3.6 rebounds, 2.4 assists and a steal per game while his 42.4% shooting from beyond the arc ranked 13th in the G League.
Brown joined War Tampa, a team comprised primarily of Auburn alumni in The Basketball Tournament 2020. He scored eight points in a 76-53 loss to House of 'Paign in the first round.
