Full-time: Middlesbrough 1-3 Manchester United
- Manchester United rise above Everton and Arsenal to fifth and extend their unbeaten Premier League run to 18 matches with a Sunday lunchtime victory at the Riverside Stadium
- Marouane Fellaini heads home Ashley Young's excellent left-wing cross at the back post to put the visitors in front after half an hour
- Jesse Lingard doubles the lead with a second-half screamer from distance
- Substitute Rudy Gestede reduces the deficit from close range after Chris Smalling's botched clearance
- Antonio Valencia wraps up all three points in stoppage time after an unfortunate slip from former United goalkeeper Victor Valdes
- Lingard limps off with an injury ahead of England's double-header against Germany and Lithuania
- Caretaker boss Steve Agnew takes charge of Middlesbrough for the first time following Thursday's dismissal of Aitor Karanka
- Despite ending a run of 509 minutes without a league goal, relegation battlers 'Boro, now winless in 11 top-flight matches, remain 19th and five points adrift of safety
- An irate Mourinho stated that he believed his side would 'probably lose' due to fatigue caused by a relentless fixture list
That just about does it for our live coverage of Middlesbrough vs Manchester United, thanks for following along.
Tottenham vs Southampton is up next, but our attention now switches to the small matter of a heavyweight clash between Manchester City and Liverpool at the Etihad Stadium.
I hope you can join me for that one.
Just in case Mourinho had led you to believe that it was all doom and gloom for United at the moment...
It seems that things have kicked off big time in the tunnel. Not sure what caused the trouble, but I'm sure we will hear more about it soon.
It's worth noting that Mourinho made his triumphant exit after that third goal went in. You wonder if that spat between Bailly and Gestede carried on after the final whistle.
Middlesbrough 1-3 Manchester United
Oh, Victor Valdes.
The Spaniard's slip while trying to clear a routine backpass allows Valencia to nip in and tap home into an empty net.
Goal: Middlesbrough 1-3 Manchester United (Antonio Valencia)
A break in play now after a real disagreement between Bailly and Gestede sparks something of a melee involving both sets of players.
A chance for Middlesbrough but Negredo is unable to make proper contact with a Gestede flick-on under pressure from Smalling.
Middlesbrough appeal in vain for a penalty after a battling Negredo works his way past Smalling and is held up by a timely sliding challenge from Jones.
Six across the back for Mourinho as United try to preserve their lead late on. Gestede's limited movement is making things difficult for Middlesbrough up front.
A quite incredible stat that bears repeating...
Lingard seems to have picked up and injury and limps off to be replaced by Martial.
Gestede, who has not been moving at all freely, receives further strapping to his hamstring.
Can Middlesbrough find an equaliser?
Middlesbrough's eight-and-a-half hour stretch without a league goal finally comes to an end.
Gestede, who had been clutching that noticeably sore hamstring, nutmegs De Gea from close range after De Roon beats Bailly to the header following a hooked clearance from Jones that soars high into the air.
Smalling completely botched an attempted clearance with his wrong foot and that allowed Gestede the chance to net his first league goal since a January move from Aston Villa.
Goal: Middlesbrough 1-2 Manchester United (Rudy Gestede)
Middlesbrough push forward in search of a goal that would set up a grandstand finish. Traore makes inroads down that right flank and a mishit cross from Barragan is claimed by De Gea.
Rojo then makes an important clearance and another ball towards Gestede is beyond the Benin international's reach.
Mourinho responds to that double change by withdrawing Mata in favour of another centre-back in Rojo.
The Argentine defender, despite wolfing down that banana, looked dead on his feet during the final moments against Rostov and Mourinho stated before kick-off that it would be difficult for him to play today.
Let's see how he gets on.
With his team looking embarrassingly bereft of pace, Agnew sends on the fast but wildly unpredictable Adama Traore in place Leadbitter.
Ramirez also makes way for Gestede, who will join Negredo in a front two.
Middlesbrough finally discover that actually putting crosses into the box with a striker of Negredo's ilk could prove an effective tactic. It's taken them long enough.
Jones just does enough to ensure that the the former Manchester City man heads a deep Ramirez delivery wide.
Better from Middlesbrough as Negredo heads straight at De Gea after a pinpoint cross from Downing.
It's not long before Lingard is speeding forward once again. Middlesbrough look like Wile E. Coyote in pursuit.
Bailly wins the ball deep inside United's half and passes to Lingard, who races forward on the counter-attack.
With Middlesbrough's slow defence inexplicably content to keep backing off and give him an ocean of space in which to operate, the England midfielder fires an unstoppable 25-yard shot past Valdes and into the top corner.
That was a real screamer. Game over?
Goal: Middlesbrough 0-2 Manchester United (Jesse Lingard)
Middlesbrough are still largely dominating possession but, as you might expect from a team that have now not scored a league goal for over eight hours, are completely and utterly toothless.