2 Chainz Training for NBA All-Star Showdown with Top Skills Guru

2 Chainz wants to destroy Snoop Dogg at their NBA All-Star weekend celebrity game -- so, he's hired the guy who trains Joel Embiid and Dwight Howard to get him ready for the showdown.

The man in charge of Tity Boi's game is Drew Hanlen -- a self-described "NBA strategic skills coach and consultant" who's insane client list also includes Bradley Beal, Jayson Tatum, Kelly Oubre and more.

Don't get it twisted ... Tity Boi is a LEGIT athlete -- he played college basketball at Alabama State -- but after spending months in a wheelchair with a broken leg, he's called in the big guns to make sure he's ready for Snoop.

Judging by the training video, Chainz looks good -- showing off his handles, making it rain from 3, and even talking a little trash.

Impressed, Snoop?