Manchester United looked set to beat Chelsea at Stamford Bridge and end their unbeaten record in the Premier League until the last few seconds of the game, when Chelsea substitute Ross Barkley scored the equalizer.
Chelsea led United 1-0 at halftime before a second half brace by Anthony Martial switched the scoreline.
Mourinho explained after the match what he told the players at halftime.
“I told them that the distance between the first half and the second against Newcastle was a huge distance,” Mourinho said.
“(Against Newcastle) we needed to improve dramatically.
“Today to win the game we didn’t need to improve that much.
“We just needed a little bit more in the final third.
“The organisation was good, the tactics to stop Chelsea’s triggers – Hazard, Willian and Jorghino.
“They played well, we were in control, and it was just to intensify our ambition and quality in the last third.
“We were the best team, I played many matches in this stadium and I think the reaction of the crowd showed they knew they were in trouble.”
Mourinho also described the 2-2 draw with Chelsea as a bad result because Manchester United were the better team.
“I am very happy with my team, my players, my supporters,” Mourinho said.
“But very disappointed with the result.
“Normally at Stamford Bridge, the away team gets a point and it is a good result.
“It is really difficult to get points here.
“In this case, it was a very bad result.
“When you are the best team you want to win, you deserve to win.
“So I think it was a bad result.”