His mother, a track star, used to take him to the park where he'd watch his brother and cousins play basketball and football.
[3][4][5] In 2007, he transferred to Saint Bernard's High School, where as a senior in 2008–09, he averaged 20 points, five assists and five steals per game.
[6] As a junior in 2012–13, Jett earned third-team All-Conference selection and was named to the A-10 All-Defensive team for the second year in a row.
[8] After graduating from college, an off-season knee injury requiring surgery undermined Jett's plans for several NBA workouts, ultimately leading him back to Saint Louis for his rehabilitation and to work out with the team.
[17][18] He was named back-to-back Player of the Week for Rounds 3 and 4[19][20] before missing the rest of the season with a knee injury.
[24] In March 2018, Jett returned to Australia and signed with the Townsville Heat of the Queensland Basketball League.
[25] In August 2018, he helped the Heat win the QBL Championship with a 2–0 sweep of the Cairns Marlins in the grand final series.
[27] On June 28, 2018, Jett signed with the Illawarra Hawks for the 2018–19 NBL season, returning to the league for a second stint.
[29] On April 3, 2019, Jett signed with the Nelson Giants for the 2019 New Zealand NBL season, returning to the league for a second stint.