That is according to teammate Ashley Young.
The Spaniard made 11 saves to deny Spurs an equaliser, and Young thinks it was a performance of the world's top goalkeeper.
"I think that [performance against Spurs] is why he's No 1 in the world," Young said. "For me he's the best goalkeeper in the world.
"He's obviously saved us at times, and I said to him after the game 'You could have caught the ball couple of times!'. But he was blocking things with his feet, his hands, and, at times, I think with his head as well!"