As a way to honor key contributors including players, coaches, fans, broadcasters and announcers, National Basketball Association (NBA) teams often retire their jersey numbers, win totals or microphones. In the case of jersey numbers, they are usually no longer available for future players to wear, although they can ask for permission from players whose jerseys are retired. Teams usually display these numbers by hanging banners on the rafters inside their home arena. As of 2022, only two teams in the NBA do not have any retired numbers: the Los Angeles Clippers and the Toronto Raptors. Two players have had their numbers retired by teams they did not play for, and only one player (Bill Russell) had his number retired league-wide. List Key Honored numbers Cleveland has introduced in 2019 a Wall of Honor, which honors former players and other personnel. Phoenix has honored some players in the Suns Ring of Honor without retiring their numbers. The Lakers have also honored their most notable players during the stint of the franchise in Minneapolis. Although their numbers are displayed on the banners, only the No. 22 and No. 34 are officially retired, since they were retired for Elgin Baylor and Shaquille O'Neal respectively. Retired by multiple teams A handful of players who had notable careers for multiple teams have had their numbers retired by each team. Two players have had their numbers retired by teams they never played for. Kareem Abdul-Jabbar had his no. 33 retired by both the Bucks and Lakers. Wilt Chamberlain had his no. 13 retired by the Warriors, 76ers, and Lakers. To date, he is one of only two players to have his jersey retired by 3 different teams, alongside Pete Maravich. Clyde Drexler had his no. 22 retired by both the Trail Blazers and Rockets. Julius Erving had his no. 32 retired by the Nets, and his no. 6 retired by the 76ers. Elvin Hayes had his no. 11 retired by the Wizards. The Rockets announced that his no. 44 will be retired on November 18, 2022. Michael Jordan had his no. 23 retired by both the Bulls and Heat. Jordan is one of two players to have his jersey retired by a team he never played for, alongside Pete Maravich. Bob Lanier had his no. 16 retired by both the Pistons and Bucks. Pete Maravich had his no. 44 retired by the Hawks, while his no.