The 2007 NBA Draft is a prime example of just how much of a crapshoot the predicting of a player's future performance can be. Greg Oden was essentially the consensus No. 1 pick, but injuries limited him to playing in parts of just three NBA seasons before he was forced to call it a career at age 26.
The No. 2 pick in that draft, however, became one of the league's best players.
It was Sam Bowie over Michael Jordan all over again in Portland, when the Blazers passed on Kevin Durant, and there's no doubt that they would have done things very differently with the benefit of hindsight.