Arsenal showed great character to draw 2-2 at Chelsea on Tuesday night.

The Gunners overcame David Luiz's dismissal against his old club to twice come from behind against Chelsea in an eventful London derby.

Arsenal looked beaten when Jorginho fired Chelsea ahead from the penalty spot after Luiz was shown a straight red card for bundling over Tammy Abraham.

The Chelsea forward had pounced on a terrible backpass by Shkodran Mustafi and rounded keeper Bernd Leno when he was shoved over by Brazil defender Luiz.

Chelsea were dominant for long periods but failed to kill the game off and were punished when N'Golo Kante slipped inside the centre circle allowing 18-year-old Martinelli to gallop free and produce an excellent finish, the Brazilian's 10th league and cup goal of the season.

It was Arsenal's first shot on target and came after a Chelsea corner which was cleared by Mustafi, the German atoning for his earlier error.

Chelsea thought they had won it when skipper Cesar Azpilicueta scored from six yards six minutes from time but spirited Arsenal earned a point through captain Hector Bellerin - making his first appearances since 5 December.

Bellerin said at the final whistle: "Everything is due to the team work. It was a really hard game with 10 men and losing a very important player for us.

"We turned it around. We were 1-0 down at half-time and saw it as an opportunity to get back into the game.

"We are a team that are always looking to improve, to defend together and to not give up. Gabriel Martinelli took it really well. He was very calm. He finished it really well. That is why we practise in training every day."

Teammate Granit Xhaka is then asked to present the Man of the Match award to Bellerin and adds: "I didn't know he had a good left foot!"

Bellerin responds, "It's good after the operation, no?"