When Abdoulaye Doucoure scored his first Watford goal, against Southampton at Vicarage Road last March, it also came in added time, but that one was scored with his foot, not his hand.
The one he punched into the goal to deny Southampton victory will be remembered for longer and is already been viewed as evidence of the need for widespread use of the video referee system.
Certainly the timing of this controversy is perfect for those in the game who would have every single decision checked, rechecked and then checked again. Those must be the same people who have no interest in getting home at night.