Gooden wore # 9 with the Magic last year, but was 0 with the grizz... his number was chosen for the reason Pantherfan mentioned, but because Olumide Oyedeji was # 00, he had to switch to the 9, which he chose cause it was the closest looking # to 0.
I actually asked a question on the Wizards page about whether whether you can have a 0 and 00 on the same team, and everyone seemed to think it was fine. Since you guys actually had experience with is last season, does anyone know for sure if it is or isn't allowed? I was just curious because Haywood has 00 and Arenas' number is 0.