This is a nifty move that I noticed while watching Nicolino Locche:

He'd duck low and to his left to draw a right-uppercut. When his opponent has thrown the uppercut he'd straighten out enough that the uppercut would miss, and then he'd be in a good position to counter with his own left to his opponent's head.

It's a clever move that can be practiced in sparring. It'll work as so long as it's done properly and quickly enough to avoid their uppercut, and if your own counter thrown before they have a chance to recover.