It was hard to pick out just one moment that summed up the rank inadequacy of Manchester United at Brentford, largely because David de Gea seemed determined to provide most of the them.
The Spanish goalkeeper had a horrendous day in Hounslow as he first let a long range shot from Josh Da Silva slip through his grasp for the opener, a goal which inspired the hosts and got them on the front foot against their remarkably brittle visitors.
And more was to follow for Brentford. Much, much more.