Jack attended Rice high school in Manhattan where he was a NYSSWA First Team All-State and New York Daily News All-City selection after averaging 16.5 points-per-game as a senior, being mentioned as a four star recruit by Rivals.com and both the No.

During his senior campaign, he averaged 13 points and 6.4 rebounds in 31.1 minutes-per-game, earning All-Metropolitan honors for a second consecutive year.

[5] Five days later, he was acquired by the Fort Wayne Mad Ants of the NBA Development League as an affiliate player of the Pacers.

[20] On December 30, 2021, Jack was acquired by the Oklahoma City Blue of the NBA G League, but was later waived on January 5, 2022.

[22] On September 18, 2023, Jack signed with Pieno žvaigždės Pasvalys of the Lithuanian Basketball League (LKL).

[25] The son of Louisa Hall, a registered nurse, Jack majored in journalism and mass media studies.