Arsenal captain Cesc Fabregas wants to lead his club back into the Barclays Premier League title race, after sealing a place in the knockout stages of the Champions League.
Fabregas' first match with the armband resulted in the 1-0 win over Dynamo Kiev on Tuesday, after a week of turmoil that led to William Gallas being stripped of the captaincy.
"We want to get back in the title race, so we have to win," Fabregas told Sky Sports News regarding the weekend's clash with Chelsea. "But let's not put too much pressure on Sunday's game. We go there with confidence."
Gallas had a strike disallowed at the Emirates Stadium and also blocked a Robin van Persie shot that appeared to be heading in.
"I believe his focus was great," manager Arsene Wenger told French television channel Canal+ of his fellow Frenchman.
"He wanted to do well, and you could see he was completely committed in the game.
"Overall, I feel he did well.
"The crowd responded well. Somewhere, they acknowledged that he was a committed captain - and I was very happy that the crowd reacted in this way to him."
Wenger was pleased with Fabregas too, adding: "He was very good tonight for me - focused for 90 minutes in the game, worked hard defensively and offensively.
"It was not easy in midfield, because they closed us down very well. I expected them to go up a little bit in the second half, but they didn't."