Another storied team, the Boston Celtics, have retired 00, 1, 2, 3, 6, 10, 14, 15, 16, 17, 18, 19, 21, 22, 23, 24, 25, 31, 32, 33, and 35.
Early star Jungle Jim Loskutoff asked that his number -- 18 -- not be retired. It was re-assigned and then retired, as it was Dave Cowens' number.
Quite. The New York Yankees have retired 1, 3, 4, 5, 6, 7, 8, 8, 9, 10, 15, 16, 23, 32, 37, 42, 44, and 49.
42 (Jackie Robinson's number) is retired for all teams.