One of the most commonly used words in the NBA is "upside." It is the definition of how far a player can go with their mix of fundamental abilities and athletic gifts.
Every year, players reach their peak level and end their affiliation with said word. 2012 was no different, as five NBA stars reached their highest level of play
From the fan favorites to the production wizards, there are major names who have reached their ceiling. This is not to say that it is all downhill from here, but instead to acknowledge that they are at a level that they will sustain or not exceed.
By sustaining this production, they can still build an impressive resume. The question is, which players are at the peak of their prime?