Phoenix Suns (2019–2020)

On June 20, 2019, the Philadelphia 76ers selected Jerome with the 24th pick in the 2019 NBA draft. His rights were later traded to the Boston Celtics alongside Philadelphia's 33rd pick for the draft rights to Matisse Thybulle^[7] before being traded to the Phoenix Suns alongside Aron Baynes for a future first round pick.^[8] Coincidentally, both players the Suns traded for were recruited out of high school and played their college basketball for Tony Bennett: Baynes at Washington State and Jerome at Virginia. On July 6, the Suns announced that they had signed Jerome.^[9] Before the start of the season, Jerome sprained his right ankle on October 21, leaving him out indefinitely.^[10] On November 25, Jerome was assigned to the Northern Arizona Suns.^[11] Jerome played the next day in a loss against the Iowa Wolves before being recalled by Phoenix on November 27.^[12][13] Jerome was assigned to Northern Arizona again on November 29 for a game against the Sioux Falls Skyforce before being recalled to Phoenix a day later.^[14][15][16]

Jerome made his NBA debut on December 2, 2019 in a 109–104 win over the Charlotte Hornets with four points, four assists, three rebounds, and three steals in 12 minutes of play.^[17] On December 21, Jerome scored a season-high 15 points on 6-of-8 shooting in a 139–125 loss to the Houston Rockets.^[18] Jerome was later assigned to the Northern Arizona Suns for a game on March 4 before returning to Phoenix a day later.

Oklahoma City Thunder (2020–2022)

On November 16, 2020, Jerome was traded to the Oklahoma City Thunder alongside Kelly Oubre Jr., Ricky Rubio, Jalen Lecque, and a 2022 first-round pick in exchange for Chris Paul and Abdel Nader.^[19] He was assigned to the Thunder's G League affiliate, the Oklahoma City Blue, still recovering from a severe left ankle sprain suffered a year earlier.^[20] He made his debut playing limited minutes for the Blue on February 11, 2021.^[20] Jerome made his Thunder debut in a game against the Atlanta Hawks on February 26. He finished the game with 9 points, 5 rebounds, and 7 assists in 22 minutes. Ty scored his career high in points, 23, against the Cleveland Cavaliers on April 8.

On March 8, 2022, Jerome underwent season-ending groin surgery.^[21]

On September 30, 2022, Jerome was traded, along with Derrick Favors, Maurice Harkless, Théo Maledon and a future second-round pick, to the Houston Rockets in exchange for David Nwaba, Sterling Brown, Trey Burke, and Marquese Chriss.^[22] The following day, he was waived.^[23]

Golden State Warriors (2022–2023)

Jerome was signed to the Golden State Warriors on October 4, 2022 for the rest of the preseason; then, he signed to a two-way contract to play along with the affiliate Santa Cruz Warriors of the NBA G League.^[24]

Cleveland Cavaliers (2023–present)

On July 6, 2023, Jerome signed with the Cleveland Cavaliers.^[25]

NBA

College