If shaq should be done in 2 years, and KG in 4 years, and Tim in 3 years, and Yao in 5 years...?

Well, centers are the ones that end their career youngest in compare to the other positions. Shaq is done now, and he will play the next year probably, and by my opinion, he will end the game at the end of the next season. NBA will miss him. Duncan too, not to mention KG. Yao is now young to end the career in five years now on. He will end it about 7 or 8 years from now. I feel sorry for Greg Oden and his rookie year, and it is a question if he will be able to adjust to the speed of the NBA play after a whole season missed. LeBron James had a trouble during the first 3 months of his NBA career to adjust, and he had no pause like Oden has now. It will be hard for this guy who was a certain Rookie of the Year. But of this had to happen, it's better now, than in his prime years.