It is incredibly difficult to remember an occasion when a Manchester United team has been so comprehensively outclassed.
Even when Sir Alex Ferguson's side lost to Pep Guardiola's outstanding Barcelona in the 2011 Champions League final - 'they do mesmerise you with the way they pass it,' said the United boss afterwards - they at least scored and created chances.
There were some mid-1990s Champions League encounters with Marcello Lippi's Juventus when United resembled boys against men - but after a while they grew and met the challenge.
And there have been some embarrassing scorelines in recent years - 6-1 against Manchester City in 2011, the same scoreline against Tottenham last season - but you still felt they were just off-days.