Manchester United manager Jose Mourinho said refereeing mistakes and defensive errors cost his team dearly as they lost 3-1 at Watford in the Premier League on Sunday.
United fell behind at Vicarage Road in the first half when Etienne Capoue scored for the hosts but the Red Devils were fuming as they believe Anthony Martial was fouled in the build up to the goal.
Although they pulled level and were dominant in the second half, United were again undone when Juan Camilo Zuniga scored after finding ample space in the penalty area.
Watford captain Troy Deeney added the third goal in stoppage time when he converted a penalty after Marouane Fellaini fouled Zuniga.
Mourinho said after the game: "I can split this into three factors – one is the referee's crucial mistakes, it's not in my control. Today, you know what happened in the first goal, so we were punished by these mistakes but I can't do anything.
— Watford FC (@WatfordFC) September 18, 2016
"Their second goal is a mistake. It's a mistake that goes against our plan and against our training because our intention was for the wing-backs to be pressed and not let them progress.
"The third thing is what is in my hands, improvement of the team and the individuals. I tried to stop the defensive mistakes, and I knew that I had a task."
He added that some individuals may be feeling pressure of playing for such a big club with great expectations.
"I feel that some individuals probably feel the pressure and responsibility too much," said Mourinho.
"We have to improve, no doubt, individually and collectively. And that’s my job."
The loss on Sunday completed a difficult eight days for Mourinho and his players as they lost to rivals Manchester City last weekend followed by a defeat to Feyenoord in the Europa League on Thursday.