That was an amazing alley-oop but the dunk wasn't that great, Wouldn't have given it a 10. You're supposed to grade the dunk not what the passer does
See in the related videos of that 5'5 guy over the 6'10 guy. That was nuts.
That's Patrick Robinson aka Pat the Roc. He's been doing that pass for many years, but he's primarily a ballhandler. He actually works out a lot of college and pro players on their handles, including Tyreke Evans in the past.
10 on the pass
8 on the dunk