Kevin Durant & Draymond Green: Stone Cold Stunnin' ... At Team USA Dinner

Draymond Green spent some quality time in Vegas with his brand new Golden State teammate, Kevin Durant, over the weekend ... and it was all thanks to Carmelo Anthony.

Of course, the guys also happen to be on Team USA together -- along with DeAndre Jordan, DeMarcus Cousins, DeMar DeRozan, Kyle Lowry -- and 'Melo organized a dinner for the team.

The squad was all in Vegas gearing up for Monday's first official practice (the team's home base is Sin City) -- but got together at the Wynn Sunday night for a fancy welcome dinner hosted by Carmelo and his friends at Haute Time.

We're told hotel owner Steve Wynn couldn't make it -- but sent one of his favorite magicians to entertain the guys. You can see in the pics they all seem to be havin' a good time.

By the way, big smiles on Draymond Green's face the entire evening -- seems he ain't too worried about that whole assault case in Michigan.