Selected 17th overall by Brooklyn in the 2019 NBA Draft. Draft rights acquired by Atlanta along with Allen Crabbe in exchange for Taurean Prince and a future second-round pick on 7/6/19. Draft rights traded to New Orleans, along with the draft rights to Jaxson Hayes and Marcos Louzada Silva, in exchange for the draft rights to De’Andre Hunter, the draft rights to Jordan Bone, Solomon Hill and a future second-round pick on 7/6/19. Signed by New Orleans on 7/7/19.

Started all 67 contests in his two years in Blacksburg from 2017-2019, averaging 13.5 points, 4.0 rebounds, and 2.7 assists in 29.9 minutes per game and shooting .464 from the floor and .383 from deep. As a sophomore, started all 34 contests for the Hokies, averaging 16.2 points, 4.1 rebounds, 4.0 assists, and 1.9 steals in 34.3 minutes per game. Scored in double-figures in 29 out of 34 games, including 12 performances of 20 or more points. Won Charleston Classic MVP after scoring 20-plus points in all three games, as well as being named to the All-Tournament Team and ACC Player of the Week.

Son of Nicole Alexander and Nicholas Walker. Has three sisters, Madison, Angel and Angelique and three brothers, Nicholas, Michael and Nicholi. Cousin of Oklahoma City Thunder guard Shai Gilgeous-Alexander. Earned First Team honors at MGM Resorts 2019 NBA Summer League after appearing in four games for the Pelicans in Las Vegas, averaging 24.3 points, 6.0 assists, 4.8 rebounds and 2.8 steals.