Damm near took his head off, brutal uppercut that sent Dominguez half way across the ring and he slumped down the ropes if memory serves. It gets posted on Twitter a lot.
The right uppercut knockout against Dominguez is at 28 seconds of this video- This content is protected
It's towards the end of this video as well 6.48 in This content is protected In my head it was a lot cleaner and heavier - maybe just age catching up with or a different angle