Last Updated: 26/11/13 9:53pm
CHANCE! Walcott popped up in that central position I mentioned earlier but he drags his shot wide from the edge of the area.
CHANCE! Walcott has looked threatening. He's drifting inside more now in order to receive the ball. Then from his usual wide position he whips in a ball and when it breaks to Cazorla he fires over the bar.
Arsenal have certainly taken their foot off the pedal. Cazorla reminds the crowd of his talent as he skips past 2 or 3 Marseille players just outside then Arsenal box.
Morel having a real go down the left. Gignac then tries to spin past Koscielny but he won't win a foul for that.
Thauvin with a header after a cross from the left but he isn't big enough to direct it towards goal.
Gignac, probably one of Marseille's more impressive players on the night, looks for a teammate in the box but Arsenal clear.
Abdallah sends Thauvin away down the right and there appears to be more urgency about Marseille's play.
CHANCE! Ozil through in the inside right position after a brilliant ball from Wilshere but Mandanda does really well to block.
Koscielny steps in to win the ball back for Arsenal. Moments later Giroud has a try but it deflects off Abdallah and goes wide.
Arsenal just struggling to find that killer pass in the Marseille final third at the moment. Monreal the latest.
Giroud with a lovely stabbed ball into the path of Ozil down the right and then Sagna gets it all wrong and slices it out of play.
OFFSIDE! Giroud clean through after another lovely scooped pass from Ramsey but the flag was up nice and early.
Good work by Khelifa that time. He tracked Sagna well. It looked for a moment like the defender may have been able to get a shot away at goal.
MISSED PENALTY! Ozil side foots the ball towards the corner but Mandanda palms away. Excellent work by Ramsey in the build up.
Lemina strides forward with the ball but Sagna is equal to it and then neat play by Ramsey to maintain possession.
OFFSIDE! Giroud can't get on the end of Ozil's free-kick. It did look like Lucas Mendes was pulling his shirt.
Wilshere wins the ball deep inside the Marseille half and Arsenal look to get moving again with Sagna and then Rosicky. Sagna is then fouled by Khelifa.
CHANCE! Gignac receives the ball in the area but Szczesny is out quickly to smother. Warning for Arsenal.
Arsenal still have the ball. They appear happy to go backwards as much as forwards. Sagna then breaks down the right but he can't quite pick out Wilshere.
Flamini will see plenty of the ball tonight occupying that position just in front of the Arsenal defence.
Arsenal knocking the ball around at walking pace at times. Mertesacker and Koscielny getting involved when they can.
CHANCE! Excellent play from Arsenal again. Wilshere squares to Ramsey and Mandanda keeps it out. Should have been Arsenal's second.
Could be a long night for Gignac if he's chasing the ball all night up front for Marseille. Ramsey then has a go but it's wide.
That doesn't last long as N'Koulou gives the ball away. The away supporters are far quieter than they were 5 minutes ago.
Arsenal pinging the ball around with confidence. Top of the Premier League and 1-0 up already, you'd expect nothing else.
GOAL! Wonderful strike by Wilshere. He received a pass from Sagna, worked his way into the box and guided the ball into the top corner with his left foot. Perfect start for Arsenal.
Chris Green has been in touch: 'I am looking forward to this game as Arsenal play an entertaining brand of football when they deliver the goods. Of course, no game in the Champions League is simple as shocks can happen when you least expect it, but I see the Gunners sealing qualification to the knockout stages quite comfortably if they perform to their full potential.'
The Arsenal fans will be really up for this one. Can they do it? You can get involved throughout. Send a Tweet to @FootballMcD and I will get as many comments on as possible.
Marseille head into the fixture on the back of a 3-1 win at Ajaccio which lifted Baup's men up to fourth in Ligue 1, 10 points adrift of leaders Paris St Germain.Arsenal, meanwhile, overcame Southampton 2-0 at the weekend thanks to Olivier Giroud's brace to open up a four-point gap at the top of the Premier League
However, if Dortmund beat Napoli at the Westfalenstadion on Tuesday night, then it will come down to a Matchday Six shoot-out to determine who qualifies for the knock-out rounds.Arsenal won 2-1 at Marseille back in September when Aaron Ramsey scored the decisive goal, just as the Wales midfielder did at the Stade Velodrome two years ago.
Arsenal face Marseille at home in the UEFA Champions League and hope to end the day celebrating an 11th consecutive appearance in the knock-out stages.Arsene Wenger's side currently top Group F with nine points and will be keen to wrap up qualification for the last 16 before a final day meeting away to Napoli.That scenario will be achieved if Arsenal's result against Marseille betters that of last season's runners-up Borussia Dortmund, who are at home to Napoli.
If you fancy a flutter this evening why not head over to Sky Bet for the latest odds before and during this Champions League cracker: http://www.skybet.com/football/champions-league/event/15865316
Marseille team to play Arsenal: Mandanda, Abdallah, N'Koulou, Lucas Mendes, Morel, Lemina, Romao, Jordan Ayew, Imbula, Khelifa, Gignac.
Arsenal team to play Marseille: Szczesny, Sagna, Mertesacker, Koscielny, Monreal, Flamini, Ramsey, Wilshere, Rosicky, Ozil, Giroud.