The 20th minute.
Nasri received Diaby's pass and dribbled toward the left side of the pitch.
With Scharner closing him down, Nasri passed the ball to Wilshere on his right.
Wilshere sent it straight on, without taking a touch, to Sagna out on the right wing.
Sagna collected the ball and sprinted forward, then played it to Arshavin, who had come over to support him 35 yards from goal.
Arshavin cleverly flicked the ball back with his heel to Diaby, who had made a late run.
Diaby took a long shot first time, but Carson, West Bromwich Albion's goalkeeper, parried it away.
Olsson moved in to clear the ball for good.
But Li Yufei beat him for speed and got there first, taking control of the rebound.
As soon as Li Yufei stopped the ball, Brunt and Olsson closed in from behind on his left.
Knowing his crossing was still far from reliable, Li Yufei decided to solve the problem himself.
With Olsson at his back, Li Yufei was sure the defender, already on a yellow card, would be too wary to commit.
So Li Yufei feinted a shot. Olsson flinched and instinctively tried to block it with his thigh.
But Li Yufei pulled off a Marseille turn, taking the ball around Olsson's left leg.
Olsson was horrified and reached out to grab Li Yufei.
Whether it was because he already had a yellow card or because Li Yufei was in the penalty area, he didn't pull hard enough.
Li Yufei was barely affected and curled a shot with the inside of his foot.
Carson tried to make a second save, but he was half a step too slow. He could only watch as the ball flew into the net right in front of him.
"GOOOOOOOAL!!!"
"Number 13, Li Yufei!!!"