Arsene Wenger conceded that Manuel Almunia's penalty save from Robbie Keane was the turning point in Saturday's derby at the Emirates.
With the scoreline at 1-1 and the lads on top, Robbie was handed the opportunity from the spot following Kolo Toure's foul on Dimitar Berbatov with 72 minutes on the clock.
Almunia saved and minutes later, substitute Nicklas Bendtner headed home with his first touch from Cesc Fabregas' corner for what turned out to be the winner.
"It was a difficult first half for us, we weren't sharp and Tottenham were very good," said Wenger. "We needed to raise our game, we did that to go 1-0 up and looked in control but then let Tottenham back into the game.
"We are conscious that we weren't at our best, only in patches and also that they missed a chance with Robbie Keane, then Almunia saved the penalty and that was the turning point of the game for us."