He has played professionally in the NBA Development League, Qatar, Lebanon, Finland, Poland and Australia.
He led Lee to a 20–12 record, earning NJCAA second-team All-Region 14 and first-team All-South Zone honours.
[1] In May 2014, Deng signed a National Letter of Intent to play for the Baylor Bears.
[4] In August 2015, Deng was ruled ineligible to play college basketball in 2015–16 due to his age.
[7] In May 2018, Deng returned to Melbourne and joined the McKinnon Cougars for the rest of the Big V season.
[6][7] In October 2019, Deng joined the New Zealand Breakers as an injury replacement for Rob Loe.
[15] On 1 June 2022, Deng signed with the Illawarra Hawks for the 2022–23 NBL season, returning to the team for a second stint.
[16] In the 2023 NBL1 North season, Deng helped the Ipswich Force reach the grand final series, where they defeated the Gold Coast Rollers 2–1 to win the championship behind Deng's 41 points and 13 rebounds in game three.
[17] Deng joined Ohud Medina of the Saudi Premier League for the 2023–24 season, where he averaged 17.7 points, 9.4 rebounds, 2.1 assists, 1.1 steals and 1.1 blocks in 18 games.
[18] In October 2024, Deng joined Al Ahli Tripoli of the Libyan Division I Basketball League.