This mock draft differs from most others. It is at least by one of the more reputable sports outlets.
2012 NBA Mock Draft - CBSSports.com Basketball
It tends to make sense though. At first, I didn't know whether the Raptors
pick up Austin Rivers with J. Lamb still on the board. But Rivers definitely is very capable of putting it on the floor. He also has a high motor, can finish and can shoot from outside..... all things Casey wants. Rivers may also utlimately be the guy who allows a bulked up Demar to play the 3.
All you Rivers supporters, I might be able to see it too at #8-ish.