"It's just an amazing and undescribable feeling to beat the No.1 player of the world, probably one of the best the sport (has) ever had, in straight sets," Djokovic said.

"I am very, very proud of myself.

"It's difficult to play against a player who is dominant on every surface. He has all the crowd behind him but I amazed with the way I coped with the pressure.

"In the most important moments, I played my best tennis."