Last Updated: 23/10/13 9:36pm
The final whistle blows then, and United have held on. Inigo's own goal was certainly fortuitous, but United had plenty more chances to double their lead. Their visitors hit the post twice as they chased the game, but it's three points for David Moyes' men.
Only ever one thought on Ashley Young's mind as he receives the ball on the left, but his low effort is deflected for a corner.
Excellent work by Giggs gives Kagawa the opportunity to break forward, but the latter's ball in to Rooney falls just behind him.
United nearly seal it as Rooney's excellent pass nearly picks out Young, but Bravo is out quickly and does well.
Young again breaks down the left, but his shot swivels wide by a margin. Wasteful is not what United need right now.
Kagawa and Rooney combine well, but the Englishman's effort is fairly tame and a comfortable stop for Bravo.
Young's first action is to embark on a run down the left, with his attempted cut back easily prevented.
Griezmann nips in ahead of Giggs and wins a free-kick just 25 yards out. Another chance for the Frenchman?
Double substitution for La Real, with Seferovic and Zurutuza being replaced by Agirrexte and Castro.
@brad_barrington remains confident, with United again in the ascendancy: "United will make a couple of changes & it will finish 2-1 United, Rooney for second goal."
Valencia turns provider for Rooney this time, flicking it on for the striker but his effort is lashed over.
Kagawa opts for the pass when another shooting opportunity arises, and Bravo easily catches the following cross.
Just under half an hour left at Old Trafford with United starting to recover a bit more confidence after La Real's onslaught, but there's still just one goal in it.
Carlos Martinez is again the hero as Valencia cuts back for Kagawa, but the midfielder's insistence on taking a touch first wastes a golden opportunity. Great ball from Rooney again for the Ecuadorian.
Great ball from Rooney to Valencia who cuts inside, and his driven shot bounces back off the post. Kagawa is first to it but it's a great block from Carlos Martinez.
With United under the cosh, Trevor Kennedy is one of many questioning Moyes' line-up: "As a keen Man United supporter i'm wondering where is that great signing Wilfried Zaha? Why is Moyes ignoring him?"
Rooney spreads play as United get a brief respite. Valencia's low cross is smothered by Bravo though.
Sociedad starting to turn the screw now. Plenty of possession, and another near-miss as de la Bella's optimistic effort from the left hits the crossbar.
Griezmann stands over a deep free-kick on United's right, but Zurutuza is the taker and it's curled just over.
The corner is nearly nodded in at the back post by Jones, but Bravo does excellently again to keep him out.
He's been poor defensively, but Evra is again a nuisance down the left for Sociedad, winning another corner.
Nervy times at the back for the hosts. Evans nearly repays Inigo's earlier own goal favour with one of his own, but United escape by the skin of their teeth.
Evra is shrugged off the ball by Vela, who lays it off to Zurutuza, who in turn plays in Seferovic. His shot is deflected out for a corner, but it's a poor delivery.
Valencia tumbles over in the Sociedad box. Inigo has pushed him in the back a little, but certainly not enough for the penalty claims that followed.
Bright start for the visitors as Griezmann poses another threat down the left. His early ball nearly finds Seferovic, but the stretching Swiss striker just can't reach.
@petecory1984 is eyeing changes for Moyes: "Take Valencia off for Nani, Januzaj on for Giggs and put Kagawa in the middle and United will win this game 3-1."
Steve from Crawley fancies United to hold on for the win: "This is a really big game for Man U as David Moyes must be feeling the pressure. Lets hope we don't concede as its important they keep a clean sheet. 2-0 Man U too win."
Open half of football, which is surprising given United's early opener. Griezmann's late free-kick has given United a shot in the arm, but can they hold on after Inigo Martinez's own goal? Let me know your thoughts and predictions via Twitter at @MattStead91, or by e-mail at Matthew.Stead@bskyb.com.
Griezmann's steps up for the re-taken free-kick, and he smashes his beautiful effort just off the post. Cracking strike, and a stark warning for United.
Rafael needs to tow the line here. He's been booked already and is busy questioning the referee's decisions still.
Giggs' delivery finds the huge figure of Jones, but he rises too soon and smacks his header into the stands.
Fourth yellow card as Giggs races through, but he's tugged back by Bergara who receives a yellow card. Free-kick 30 yards out.
Solid work down the right gives Carlos Martinez space to launch in a cross, but De Gea is out quickly again for the catch.
Griezmann's slightly fortuitous knock forward falls into the path of Vela, but Rafael manages to keep up with the Mexican's pace and isn't fooled by the former Arsenal man's attempts at trickery either.
In the other Group A match of the night, Stefan Kiessling has put Leverkusen 1-0 up against Shakhtar. United sitting top as it stands with 7 points, Leverkusen on 6, Shakhtar 4 and Sociedad 0. Of course, everything could change numerous times tonight.
Chance for Sociedad. Seferovic breaks through with Johnny Evans and Phil Jones back for United, but the striker wriggles away to crash in a deflected effort which is well saved by De Gea.
Roaming isn't the word, Patrice Evra is essentially playing as a left-winger here. While it's leaving United a little exposed at the back, the Frenchman is creating problems and another cross results in a corner.
Vela receives a yellow card for a tough challenge while trying to win the ball back in United's half.
Excellent corner routine sees Giggs bursting into the box, with the Welshman clipping the ball into Hernandez to head home, but Carlos Martinez stepped up well and the Mexican is offside.
He's everywhere tonight! Rooney gets on the end of another cross from the right, but this time his bicycle kick flies well over.
Rafael's cross finds Rooney perfectly, but the Englishman is caught in two minds. His volley is well saved by Bravo. Encore!
Panic is setting in the Sociedad defence every time the ball is hit forward by United. Valencia races through only for a defender to get a foot to it, and Gonzalez then pole-axes the onrushing Hernandez.
Reminder from La Real that they won't just lie down, Kagawa is dispossessed by Bergara, whose low shot zips out via a deflection for a corner.
Giggs slips in Kagawa down the left, and the Japanese playmaker delivers quickly for the central Hernandez. The Mexican tumbles over however amidst penalty claims, but they, just as Kagawa's excellent ball, both go amiss.
United burst out of the blocks early on but they also look fairly comfortable on the ball, a couple of dispossessions aside. Positive signs for Moyes' men.
GOAL! 1-0 United! United take an early lead through Inigo Martinez's own goal after Wayne Rooney's excellent run and shot hit the post.
Just under 5 minutes until kick-off then. Can the Champions League be the medicine for Moyes' men's league heartache? Or will Sociedad merely complicate things further for the home side?
@akinwaleodeneye is venting his frustrations over Twitter: "Don't think Moyes is doing himself any good with the United teamsheet. Giggs should not be in midfield, it's about time he retires."
Wahid from Halifax isn't too happy with Moyes' choices: "Not the best of team selections. Should have had Nani and Valencia on the wings and Kagawa in the middle. Giggs starting and Carrick in the middle is not looking good I am afraid."
Chris Green from Huddersfield is first in: "On paper, Manchester United should win this match comfortably as they're the home team. However, United's defence has been jittery and unstable all season, and if they make any unnecessary errors at the back this evening, then we could see the great United fall yet again!"
He might be starting today, but United's Ryan Giggs is a whole 5 years older than La Real manager Jagoba Arrasate. Can the Welshman orchestrate a home victory tonight?
Following a hugely successful season last year, Sociedad have started this season in Liga BBVA rater inconspicuously, with just 10 points from 9. They're sat in 12th place, but United will be warned off underestimating their opponents tonight.
Rare start handed to Javier Hernandez then, with Robin van Persie and Danny Welbeck left out completely by boss Moyes. Can then produce the goods at home?
Real Sociedad: Bravo, Carlos Martinez, Gonzalez, Inigo Martinez, de la Bella, Vela, Zurutuza, Bergara, Prieto, Griezmann, Seferovic. Subs: Zubikarai, Agirretxe, Pardo, Ansotegi, Castro, Cadamuro, Javi Ros
Manchester United: De Gea; Rafael, Jones, Evans, Evra; Valencia, Carrick, Giggs, Kagawa; Rooney, Hernández. Subs: Lindegaard, Büttner, Smalling, Fellaini, Nani, Young, Januzaj.
Can United bounce back in Europe's elite competition though? Let me know your thoughts and predictions via Twitter at @MattStead91, or by e-mail at Matthew.Stead@bskyb.com. Team news is coming up.
A mere book is creating all the headlines over in Manchester currently, but tonight sees the return of European action to the Theatre of Dreams. David Moyes may well be having sleepless nights in the United hotseat however, with well-documented struggles in the Premier League continuing with a home draw against Southampton last time out.
Hello and welcome to this evening's live commentary on the Champions League clash between Manchester United and Real Sociedad at Old Trafford.