First time in 27 years Saints have won at Old Trafford
Saints leapfrog United into third place
Tadic slots in after Pelle shot had hit the post
Image source, OptaLots of attack-minded players in the Manchester United side but there is always the danger that a rich forward line will leave their defence exposed, so it has proved on a couple of occasions, with Southampton perhaps a little unlucky not to be 1-0 up.
Robbie Savage
BBC Radio 5 live at Old Trafford
"When United are attack, they go forward in numbers and leave only four at the back. If Southampton can get the ball in those moments, there's a chance for them to get in on the break as it's not the four quickest players that are left behind for United."
The good people of Opta have just sent me some early stats. And they make interesting reading. United's passing accuracy so far stands at 90%.
Manchester United are playing with width. Luke Shaw is eager to push forward at every opportunity against his old club and the hosts are now enjoying a period of possession after early Southampton pressure. Neither keeper has yet to make a serious save. All pretty even so far.
Image source, APAndy Donley:, external Di Maria, Rooney, Mata, RVP... If Man Utd don't play exciting football today Schneiderlin and Wanyama will deserve knighting.
Yullaw:, external Looks like an easy win for Man Utd with a hat-trick from Angel Di Maria. Note my words!
Robbie Savage
BBC Radio 5 live at Old Trafford
"Angel Di Maria is playing off Wayne Rooney and he's got the licence to roam everywhere with his neat touches and turns. It's great to see him back in the Premier League after his injury lay-off."
Morgan Schneiderlin gifts United a free-kick just outside the Saints area after man-handling Angel Di Maria but Wayne Rooney's ball into the area is cleared by the visitors.
Image source, PAAngel Di Maria is partnering Robin van Persie in attack but Manchester United can't get out of their own half. It's Southampton who look as though they mean business.
Robbie Savage
BBC Radio 5 live at Old Trafford
"I thought Daley Blind was running in sand there! What a chance for Southampton and Blind is just not quick enough in that left-hand side position. A great start from Southampton, positive and direct."
Great start by Southampton as Nathaniel Clyne dribbles his way into Manchester United's penalty area before firing across the six-yard box. Close.
Manchester United's first home game of 2015 is under way.
Out come the teams. Flashbulbs go off as Louis van Gaal makes his way from the tunnel to his seat in the dug out. Ronald Koeman and Van Gal are not the best of mates but they did manage to shake hands at St Mary's. Pleasantries are exchanged here too.
Robbie Savage
BBC Radio 5 live at Old Trafford
"I always think that teams can score against Manchester United, so I think we're in for a game with a lot of goals - but I think United will get more than Southampton because of their firepower. If Southampton finish in the top six and Burnley stay up, it should be a straight fight for manager of the year between Ronald Koeman and Sean Dyche."
Image source, OtherThis is The One by The Stone Roses is playing. It can mean only one thing. The teams are in the tunnel. Ready for this?
BBC Radio 5 live
Ex-Ajax and Barcelona player Ronald De Boer: "There is a lot of interest in the Premier League in Holland because of Louis van Gaal and Ronald Koeman in charge. Everyone wants to follow Koeman wherever he goes.
"If you give Louis van Gaal time, eventually it will turn out right because he is an amazing coach."
Image source, Getty ImagesRight now Manchester United are not even the best team in the Premier League yet boss Louis van Gaal says it is his ambition to turn the Red Devils into the best team in the world., external Van Gaal already has British football's record signing in £59.7m Angel Di Maria, and strengthened his squad this week with the capture of three-time Champions League winner Victor Valdes (above).
"My ambition is that I have the best players who can collaborate with each other to form the best team of the world," added the Dutchman.
Former Barcelona goalkeeper Valdes, 32, has penned an 18-month deal, with the option of another year.
Impressive. But the last time Southampton kept a clean sheet against Manchester United in the league? 31 August 2003. In the eight games since, United have scored 17 times.
Robbie Savage
BBC Radio 5 live
"I'm surprised if Radamel Falcao is being rested. If he's here, which he is, then he might as well be on the bench so he can offer 20 minutes if Manchester United need it."
Where is Radamel Falcao? Apparently the Colombia forward is suited and booted sat in one of the stands at Old Trafford after being left out of Manchester United's 18. Louis van Gaal has told television the 28-year-old is being "rested" - not dropped. I've heard that before.