Bell redshirted in 2013. As a redshirt freshman at Oregon, Bell averaged 5.1 points, 6.1 rebounds and 2.7 blocks per game.[5] His 94 blocks were a school record for a season.[6] As a redshirt sophomore, he averaged 7.0 points, 5.4 rebounds and 1.8 blocks per game.[7] As a redshirt junior, Bell averaged 10.9 points, 8.8 rebounds and 2.3 blocks per game and helped lead Oregon to the Final Four.[8][9]
On December 22, against the Los Angeles Lakers, Bell scored a career-high 20 points on 9-for-13 shooting to go with his career-high 10 rebounds in 25 minutes.[12] On April 14, 2018, Bell made his debut in the NBA playoffs, coming off of the bench with three points and two rebounds in a 113–92 win over the San Antonio Spurs.[13] The Warriors made it to the 2018 NBA Finals where they would sweep the Cleveland Cavaliers in four games.
Bell played in the 2018 NBA Summer League for the Warriors.[14] On March 27, 2019, the Warriors suspended Bell for one game due to "conduct detrimental to the team".[15][16] On May 16, 2019, Bell came off the bench and scored a playoff career-high 11 points to go with 3 rebounds, 2 steals, and an assist and a block apiece in a 114–111 win against the Portland Trail Blazers.[17] On May 20, Bell made his first career playoff start in a series clinching win against the Blazers, contributing 7 points, 2 assists, and a steal.[18] The Warriors reached the 2019 NBA Finals, but were defeated in 6 games by the Toronto Raptors.
On March 11, 2020, the Capital City Go-Go of the NBA G League announced that they had added Bell off of waivers,[24] but Bell had yet to have his on-court debut for that team by the time that the 2019–20 season was suspended due to the COVID-19 pandemic.[25] The G League season was later cancelled.[26]
On June 29, 2020, the Cleveland Cavaliers announced that they had signed Bell to a two-year deal.[27] On November 22, 2020, Bell, along with Alfonzo McKinnie, was traded to his hometown team the Lakers in exchange for JaVale McGee;[28] however, Bell was waived the following day.[29]
However, before playing for Erie, Bell signed on January 23, 2021, a 10-day contract with the Wizards,[32] but after three games, he was released on January 31.[33]
Erie BayHawks (2021)
On February 2, 2021, the Erie BayHawks re-added Bell to their roster for the start of the G League season.[34] He averaged 17.6 points, 9.3 rebounds and 3.3 assists per game in seven games for Erie.[35]
Return to Washington (2021)
On April 14, 2021, Bell signed a second 10-day contract with the Wizards.[35]
In August 2021, Bell joined the Atlanta Hawks for the 2021 NBA Summer League, scoring 6 points in 17 minutes on 3-of-4 shooting in his debut in a 85–83 loss against the Boston Celtics.[37] On September 24, 2021, he re-signed with the Warriors,[38] but was waived as one of the last cuts before the start of the regular season.[39] In October 2021, Bell joined the Santa Cruz Warriors.[40]
Chicago Bulls (2021–2022)
On December 30, 2021, Bell signed a 10-day contract with the Chicago Bulls, the team that originally drafted him, using the hardship exception that became available when the Bulls had multiple players in the NBA's health and safety protocols.[41]
On September 28, 2023, Bell signed with the Indiana Pacers,[45] but was waived two days later.[46] On October 28, 2023, he joined the Indiana Mad Ants[47] and on March 11, 2024, he was bought out to go abroad.[48]