Jose Mourinho believes Manchester United lost the derby against rivals Manchester City because his players were tired.
United were outplayed in virtually every area of the pitch on Sunday as Pep Guardiola’s men carved them open seemingly at will in their 3-1 win.
Goals from the effervescent David Silva, Sergio Aguero and Ilkay Gundogan meant Anthony Martial’s second half penalty was nothing more than a consolation.
The derby was United’s third away game in the space of a week and Mourinho admitted fatigue played a part in the result.
“The third goal kills us and again, it is a mistake,” he told talkSPORT’s Dom McGuinness.
“But it’s a mistake that, as I was explaining in the press conference, for me the physical fatigue and the mental fatigue – they lead to mistakes.
“My players, they were tired. They were tired physically, they were also tired mentally and when I say that ‘mental fatigue’ you need to be in this game and in other high-level sports to know what it is.
“The concentration of the big matches – they dry you, you are dry inside.
“And to be again ready for another big match is not easy.”