Yeah, that was nasty. I would like to see the realtime version without the slow down. He jumps from ~12 feet out, has his head at the rim's height during the peak of his jump, over two defenders, one of which was smart enough to back away.
Here is a summer mixtape of that same kid. Apparently, he is 6'8"-6'9", 190 lbs. He will probable grow some more and will finish high school in 2017. He's also the cousin of Washington's Otto Porter.