The referee blows the final whistle and United leave West Brom with a 3-0 victory. The pressure intensifies on Mel and the home side.
We will have three minutes of time added on at the end of the game.
Welbeck is fouled by Anichebe and receives a yellow card.
United still looking for goals. Not sure where West Brom go from here. Looking like a really battle for them between now and the end of the season.
Rafael off Vidic on. The departing captain gets a run.
Kagawa and Rooney try to set another up but West Brom have numbers back.
Welbeck with a lovely side footed finish after Rooney set him free. Game over.
Wonderful block from Rafael after Berahino's strike appeared goal bound.
Anichebe, who has caused problems all afternoon, wriggles free but his shot is a poor one.
Gera's header is a poor one and Kagawa clears near the corner flag.
Evra makes a late challenge and West Brom get the chance to deliver from the right.
CHANCE! Gera gets in behind Evra and De Gea does well to palm away.
Kagawa with a nice early touch but his scooped pass is claimed by Foster. Unlucky.
Kagawa on, Januzaj off.
Welbeck blazes over but it was a beautifully weighted pass from Rooney.
Worrying times for West Brom. They could end the weekend inside the bottom three.
Evra slides in on Anichebe in the area but he takes the ball.
McAuley concedes a corner after strong play from Welbeck.
Berahino heads over from close range but the flag was up.
Berahino came on earlier for the injured Brunt.
United attacking with real purpose now. Januzaj the latest to see his cross blocked.
West Brom just can't keep hold of the ball at the moment. Easy for United.
Mata getting in and around the back of the West Brom defence again but his shot is blocked.
GOAL! Rooney heads in from close range after excellent approach play from Mata and Rafael.
Strong challenge by Jones on Anichebe.
van Persie off Welbeck on.
Mata's free-kick isn't a good one and West Brom clear. Brunt is down inside the West Brom area and the referee stops the game. He looks in some pain.
Reid off Sessegnon on.
Rooney looks for van Persie in the middle but Olsson does well to head clear.
Fellaini brings the ball down on his chest just inside the area but Ridgewell dives in and blocks.
Mata not known for his tracking back did superbly then. Moyes will be delighted with that.
CHANCE! Mata scoops away from three yards after Anichebe's attempt appeared to be going in.
Gera then fouls Smalling. You can imagine what the crowd made of that!
The home fans are from happy about that decision.
van Persie with a late challenge. The crowd are wanting another yellow card but it will be nothing more than a firm word.
Anichebe down the left but Smalling is close by and United clear.
Anichebe sets Gera up after a nice move involving the two but his shot is straight at De Gea.
Game hasn't settled this half so far. That will probably suit United who have the lead.
Yellow for van Persie for a late challenge on Amalfitano.
Anichebe causing more problems down the right. He holds off one or two United players and shoots straight at De Gea in the end.
Gera goes down in the area but the referee shakes his head. Brunt fires the next chance into the stand.
van Persie delivers from the right (similar to the goal) but it's over Fellaini.
Mulumbu fouls Fellaini and United win another free-kick in a dangerous area.
United get the half started...
The referee blows for half-time. United lead 1-0 thanks to Jones's header but West Brom have responded well and will be confident.
Amalfitano doing his best before the break to try and create something. Fellaini then fouls Brunt. Clumsy.
We will have two minutes of time added on at the end of the half.
West Brom have responded well since going behind.
Loud cheers from the United end as Foster clears again.
Ridgewell gets forward down the left but Smalling blocks. At the other end, Mata's ball to van Persie was intercepted by 'keeper Foster but he makes a hash of it and it appeared to clip his arm. NO FREE-KICK given. Looked like Foster was out of his area as well. United are furious.
CHANCE! Great control and turn by Anichebe and his shot is inches wide. Unlucky.
Morrison on, Yacob off.
High studs from Fellaini on Yacob and West Brom win a free-kick.
CHANCE! Yacob heads over from inside the six yard box. Olsson headed the corner towards the midfielder.
Rafael concedes a corner. The West Brom fans roar once more.
Rooney and Mata combine but Januzaj's strike is high and wide.
GOAL! van Persie's free-kick from the right is headed past Foster by Jones from ten yards. Rafael did well to win the set piece in the first place.
Januzaj looks for a cross towards Rafael but his cross is hammered into the ground and Olsson intercepts.
Brunt with another cross down the left but Jones is there first this time.
Amalfitano tried to wriggle past Fellaini in the area but the big Belgian does well.
van Persie gives Yacob a kick from behind and West Brom will get us started again with a free-kick just inside the United half.
CHANCE! Wonderful cross form the left by Januzaj and Rafael's header is saved onto the bar by Foster.
Amalfitano with the near post flick but it's easy for De Gea. Good move though.
Not a lot to talk about at the moment. West Brom look comfortable.
Mata and Rooney stand over the free-kick. Mata chips in but the flag is up. Offside.
van Persie creates a yard of space and is fouled. Good play.
Very tight in the midfield. No way through past Yacob and Mulumbu so far for United.
Januzaj wasteful in possession and West Brom have it back.
West Brom play their way out of trouble well. Brunt with the diagonal pass towards Anichebe but Evra is there.
Jones struggling to cope with Anichebe at the moment. Striker is a real handful.
Rooney thought he had won a corner but it's a goal-kick.
Mata is fouled by Yacob. Looked a late one.
Anichebe with a cross from the right but Brunt's header goes straight to Rafael.
West Brom haven't won since New Year's Day against Newcastle United.
Mulumbu was the West Brom player who cleared Fellaini's deflected effort off the line.
Fellaini heads towards goal and it's deflected and cleared off the line. Decent chance.
Reid clears the second of two corners. McAuley concedes a third in the space of a few minutes.
West Brom are holding an impressive shape. van Persie gets a yard in the area but Olsson is across to concede the corner.
Fellaini and Rafael get in each others way and West Brom win a throw.
Yellow card for Januzaj for a deliberate handball.
Fellaini certainly seeing plenty of the ball early on.
Felaini has a half chance but it's cleared. Anichebe then goes for the direct approach but Smalling recovers well.
Fellaini wide to Januzaj and it's a United throw.
Rafael is caught late by Brunt, free-kick. Januzaj is limping on the other side of the pitch.
Rafael wins the ball and feeds Rooney. The England man hits it long to van Persie but West Brom get bodies back.
Brunt with a clever ball through to Amalfitano but it's a goal-kick to United.
Good run from Anichebe and Smalling is forced into conceding a throw.
Evra looks long for Januzaj again and this time it goes out for a throw.
Rafael dives in inside the West Brom half and the home side are awarded a free-kick.
Mata delivers the corner but Ridgewell heads away.
Foster makes a mistake and United win a corner. Unexpected.
West Brom pressing United back early on. Smalling and Jones facing an early test.
Amalfitano with space down the right. His cross is cleared and West Brom win a throw. Good start by the home side.
Poor delivery from Brunt and United clear.
Fellaini has been busy and fouls Gera. West Brom free-kick.
Fellaini with a couple of early touches. Evra with a ball to Januzaj but it's long and goes out for a goal-kick.
The home side get us started and away we go...
Out come the teams. What a cracking atmosphere we have at the Hawthorns this afternoon. The crowd are certainly up for this one!
We are nearly ready. The players will shortly be gathering in the tunnel area.
PRICEBOOSTS: Mata to score first 8/1, Januzaj FGS and #MUFC 1-0 win now 50/1, Fellaini & 1-1 OR 2-1 win at 40/1
Jamie has been in touch: 'Strong looking team from United, going for a 3-1 victory.'
You can get involved as well. Send a Tweet to @FootballMcD and I will get as many comments on as possible.
If you fancy a flutter this afternoon head over to our friends at Sky Bet for all the latest odds before and during this one.
United head into the game in poor form as they are still licking their wounds following a 2-0 defeat to Olympiakos in the Champions League.They have won just one of their last five games in all competitions, a 2-0 victory over Crystal Palace at Selhurst Park, having drawn two and lost two.Wayne Rooney will be their main dangerman and he has scored six goals in his last five Premier League starts against Albion.
West Brom are hovering dangerously above the relegation zone so are desperate for points themselves, as they are just one point better off than 18th-placed Sunderland, who have a game in hand.They will not be intimidated by the arrival of United, though, having held their own with Everton, Liverpool and Chelsea on home turf in 1-1 draws, which was also the scoreline when Felix Magath's Fulham came to the Midlands.
This fixture last season ended in a thrilling 5-5 draw in Sir Alex Ferguson's last league game in charge - then Albion proved a thorn in Moyes' side back in September last year when goals from Morgan Amalfitano and Saido Berahino earned them a famous 2-1 win at the Theatre of Dreams.
David Moyes has written a letter to United fans thanking them for their support following a tough start to his tenure as Old Trafford boss.And he will need that support more than ever when his United side head to the Black Country for a tricky lunchtime clash with Pepe Mel's Baggies.
West Brom will be looking to complete a double over Manchester United this afternoon.
Man United subs: Lindegaard, Giggs, Vidic, Young, Fletcher, Kagawa, Welbeck.
Man United starting XI: De Gea; Rafael, Jones, Smalling, Evra; Carrick, Fellaini; Mata, Rooney, Januzaj; van Persie.