Bournemouth completed one of the best comebacks of the season to beat Liverpool for the first time in a sensational Premier League game.
The Cherries battled back from 2-0 down at half-time and 3-1 behind with 15 minutes to go, with Nathan Ake's 93rd-minute winner sealing a famous win.
Sadio Mane scored the Reds' opener when he controlled Emre Can's ball over the top, held off Ake and poked home.
The visitors looked in control when Divock Origi went past Artur Boruc and curled home their second from a narrow angle.
Bournemouth brought on Ryan Fraser in the 55th minute and that proved to be the turning point of the game. Seconds later James Milner brought him down in the area and Callum Wilson scored the penalty.
Can put the Reds 3-1 up with a 20-yard curling effort but Fraser scored his first Premier League goal when he tucked home after Wilson's cross had hit the heels of Benik Afobe.
Centre-back Steve Cook got Bournemouth level when he controlled Fraser's cross, swivelled and volleyed home.
It looked like the drama was over until the third minute of injury time when Loris Karius spilled Cook's shot and Ake tapped home into an empty net.
Meanwhile, a mad Mourinho defended his choice to bring on Marouane Fellaini who conceded United's late equaliser against his former employers, Everton at Goodison park.
Asked about his decision, United manager Mourinho said the reason for introducing Fellaini was "obvious" due to his height and Everton's approach.
"I thought you would know more about football than you do," the Portuguese added at a post-match news conference.
"Everton is not a passing team any more like they were in the past. Everton is a team that plays direct: goalkeeper direct, Ashley Williams direct, Ramiro Funes Mori direct. Everything direct.
"When you have on the bench a player with two metres [in height] you play the player in front of the defensive line to help the team to win the match."
United took the lead at Goodison Park through Zlatan Ibrahimovic's lobbed finish and were looking to wrap up only their third league win in 11 games when Fellaini replaced Henrikh Mkhitaryan in the closing minutes.
Just two minutes later, Fellaini went in with a clumsy challenge on Idrissa Gueye and Leighton Baines equalised from the spot.
-BBC