Why does players mentally's change when they leave college

[JellyBean]

Derrick Williams was physical beast who yammed on everyone when he left he become a inefficient jump shooting big.
Beasley was also like this he got 12 rebounds per game.
Is it money that make people change their game.

Bottom line, some players aren't that hungry. They are just happy to be at the table while others want the table, the food, and everything that is in the house!!

[nathanjizzle]

college is a conglomerate of some talent, and some people that just worked hard to get into the sport at a collegiate level. nba requires both talent and work. beasley had talent, didnt work hard, now he plays in china.

[wang4three]

It was pretty known in Beasley that when he went up a decent big in college, he would be rendered rather ineffective. He faced Jason Thompson and Rider early on his freshman season and was overpowered by Thompson.

That said, many teams still projected him #2 because they banked on his talent level -- even though he was overpowered by more skilled players, he was still only 19 and lots of potential.

With Derrick Williams, it was similar. He was big enough to play the 4 in college (with some 5), lots of potential, and did play even more hungry than Beasley, but he's part of the classic problem of tweener forwards in the NBA. He's not big nor skilled enough to play the 4, and he's not good enough of a shooter nor slasher to play the 3. He's just in the middle. I think the tweener forward position is one of the hardest to be in the NBA. Most of the time, the player learns a way to play more of one position (Paul Millsap, Jeff Green, Kenneth Faried, Shawn Marion, Lamar Odom, Thaddeus Young, Boris Diaw) but still can switch to present mismatches. Those who just stick between positions and needs either to be extremely lucky to find the right system or just gets lost in the fold.