[3] As a sophomore at Mayfair, Christopher averaged 25.9 points, 6.5 rebounds, 4 steals, and 3.6 assists per game, leading his team to a 21–8 record.

He averaged 29.2 points, 8 rebounds, 3.9 assists, and 3.1 steals per game, leading his team to the CIF Southern Section Division 1 quarterfinals.

[9] Sources: On November 26, 2020, Christopher scored a career-high 28 points for Arizona State in an 83–74 loss to third-ranked Villanova.

[13] He made his official NBA debut on October 20, coming off the bench with five points in eight minutes in a loss against the Minnesota Timberwolves.

[19] In April, he recorded his first 30-point effort by shooting 11-of-14 from the field, and 3-of-5 from beyond the arc, along with three assists and two steals in a home loss against the Timberwolves.

[21][22] On July 8, 2023, the Memphis Grizzlies acquired Christopher from the Houston Rockets for Dillon Brooks (via sign-and-trade) in a five-team deal.

[26] On January 14, 2024, Christopher joined the Sioux Falls Skyforce[27] and on July 25, he signed a two-way contract with the Miami Heat.

[2] Christopher's sister, Paris, played college basketball for Saint Mary's but suffered a career-ending injury as a freshman.