Macon began his college basketball career at Holmes Community College, where he was named a junior college All-American after averaging 23 points, 4.1 rebounds and 3.1 assists per game as a freshman. He was named to the NJCAA Division IMen's Basketball Third Team All-America as a sohomore. He transferred to Arkansas Razorbacks, spurning offers from Ole Miss, Mississippi State, Memphis and UMass. As a junior, Macon was second on the team in scoring, averaging 13.4 points, 2.6 rebounds, 2.2 assists and 1.1 steals per game. He was named to the All-SEC Tournament team and earned SECPlayer of the Week honors in February 2017 after posting 30 points against Ole Miss. After the season, he declared for the 2017 NBA draft but did not hire an agent and ultimately returned to Arkansas. As a senior, he was named to the Second Team All-SEC. Macon averaged 17.1 points and 4.0 assists per game and led the SEC in three-point shooting at a 43.8 percent clip. He was named SEC Player of the Week three times as a senior and joined teammate Jaylen Barford in the 1,000-point club on senior night.
After going undrafted in the 2018 NBA Draft, Macon received contract offers from several NBA teams as well as overseas clubs. He joined the Miami Heat for the NBA Summer League. He signed a two-way contract with the Dallas Mavericks on July 30, 2018, splitting time between the Mavericks and their G League affiliate the Texas Legends. In his first game with the Legends, Macon scored 35 points on 12-of-18 shooting as the Legends defeated the Austin Spurs 126–120. Macon made his NBA debut on October 26, 2018 against the Toronto Raptors, playing one minute and scoring no points in the Mavericks' 107–116 loss. On July 26, 2019, Macon was waived by the Mavericks.
Miami Heat/Sioux Falls Skyforce (2019–2020)
On September 20, 2019, Macon signed an Exhibit 10 contract with the Miami Heat. On October 19, after training camp, the Heat converted Macon’s deal to a two-way contract with their G League affiliate, the Sioux Falls Skyforce. On January 8, 2020, the Miami Heat waived Macon. On January 16, 2020, the Sioux Falls Skyforce announced that they had acquired Macon via returning player right. Macon averaged 17.0 points and 4.7 assists per game for the Skyforce.
