Ole Gunnar Solskjaer faced up to his first defeat as Manchester United interim manager and admitted his side had been given a "reality check" by Paris St Germain.
The French heavyweights were shorn of Edinson Cavani and Neymar for the first leg of this Champions League last 16 tie but still proved too strong for United as Presnel Kimpembe and Kylian Mbappe secured a 2-0 win at Old Trafford.
A loss for the Red Devils was compounded by the late dismissal of Paul Pogba, who will miss the second leg at the Parc des Princes, and Solskjaer lamented a gulf in class between the sides.
