These are the college basketball players that you don't want on your team. They may be talented, they may put up numbers, they may even be great kids, but they will destroy your team's chance of winning an NBA Championship. These players (for a variety of reasons) are simply not capable of playing a prominent role on a contending team. Here it goes:

Jerryd Bayless, Eric Gordon, Chase Budinger, Michael Beasley, Blake Griffin, Austin Daye, O.J. Mayo

I guarantee you that if any of these guys wins a Championship, it will be as no better than the 4th option on a team. The problem is that most of them will 'live up to the hype' by putting up huge numbers and thus their coaches will be obligated to give them prominent roles, even if they're taking bad shots and hardly playing defense (i.e. Kevin Durant). For some of these players their detriments are more complex (I'll get into O.J. Mayo at a later date). I omitted prospects who will never play a starring role on a team (like Tyler Hansbrough or TaJuan Porter) and prospects whose shortcomings have been realized before they even got to the NBA (like Micah Downs or Kyle Singler).