Jose Mourinho claimed that his players were 'tired and exhausted' after Sunday's 1-1 draw with lowly Swansea at Old Trafford.
Manchester United took the lead in injury-time of the first half, with Marcus Rashford controversially winning a penalty which was dispatched by Wayne Rooney.
But a superb free-kick from Gylfi Sigurdsson with just over ten minutes remaining levelled the scores, and meant United missed out on the chance to climb to third in the Premier League.
Mourinho, though, praised the effort of his players, stressing that those that played are "very, very, very tired."
"We lost players and we lost points, so yes, it was a bad day," he told BT Sport - via Goal. "It's not that we look tired and exhausted, we are.
"You cannot isolate the performance out of the context. The context is nine matches in April with a squad of 22 that is reduced to 13 or 14 players, with players who are very, very, very tired.
"Did Jesse Lingard and Ashley Young look sharper than other people? Of course, they did not play the last match. I am more than happy with the players, they gave everything they could. I have zero criticism."
Mourinho appeared to be frustrated with Luke Shaw, who withdrew early in the first half, as well as fellow defenders Phil Jones and Chris Smalling, still absent through injury.
"I don't know about the injuries," he said. "I think Luke Shaw's must be a big injury, because to leave the pitch after 10 minutes I am expecting a very big injury. At the moment, we cannot walk from the bed to the toilet.
"I prefer not to speak about Phil Jones and Chris Smalling. I prefer to speak about Juan Mata, giving everything to be available [following groin surgery]. I am grateful for that."