Am I the only one who noticed that he said he DOES box, and he DOES (or rather, DID) have a trainer, and he HAS sparred before?

This other kid doesn't look like he knows what he's doing at all, outside of having watched a few boxing matches and maybe look at a book or two. His form is a lot better than most street brawlers, but you can definately tell he doesnt REALLY know what he's doing.

Just stick to your basics, and this kid should be no problem, assuming you aren't lying/exaggerating about your training and experience.