As Bryan Mbuemo tucked home Brentford's fourth goal within just 35 minutes, Manchester United's players looked shell-shocked and disconsolate, barely able to believe what was happening in west London on Saturday evening.
A performance devoid of leadership, organisation, accountability and togetherness enabled the Bees to beat United for the first time since 1938.
The catastrophic start to Erik ten Hag's reign continued as he became the first manager in more than a century to lose his first two games as Manchester United boss.
That year in 1921, John Chapman's United finished bottom after losing his first two games and United were relegated to the second division - Ten Hag will surely not face such a disaster but it's not going to get any easier.