Tottenham striker Jermain Defoe is confident his team can complete their first north London derby double in almost 20 years this weekend.

Spurs head to Arsenal on Sunday knowing a win would stretch their lead over the fourth-placed Gunners to 13 points with 12 matches of the Barclays Premier League season left. Harry Redknapp's side overcame their bitter rivals 2-1 at White Hart Lane in October, but they have not done the double over the Gunners in the league since the 1992-93 campaign.

Having lost just once in their last 15 games, the Tottenham squad are upbeat about their chances of claiming a telling victory, and Defoe told radio station LBC 97.3: "It's going to be a difficult game but I'm confident, obviously, with the way we're playing."

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