VIDEO: Premier League goal scored by a beach ball

A goal scored by a beach ball (which was loose on the pitch) for Sunderland against Liverpool yesterday. It's certainly a first. It seems unbelievable that the referee allowed it. The Guardian comments:

Under the laws of the game the beachball, which bore a Liverpool crest, should have been considered an outside agent, which, whether an errant inflatable, plastic bag or yorkshire terrier, should bring a drop-ball if struck by the match ball. The referee, Mike Jones, despite seemingly having a clear view of the incident, allowed the goal to stand, however.