Kevin Hart -- SCHOOLED By Mo'ne Davis ... In Celeb Hoops Game (Video)

Kevin Hart might be a little dizzy 'cause Little League legend Mo'ne Davis just put him in the SPIN CYCLE in the Sprite NBA Celebrity Hoops Game moments ago.

Hart -- who's a 3-time Celeb Hoops MVP -- caught himself in the unenviable position of being one-on-one with Davis ... who just ate his lunch during a ridiculous drive to the rim.

Check it out -- Kev is playing defense (he takes this stuff seriously folks) but Mo'ne leaves him in the dust ... and finishes like a pro (which she'll probably be eventually).