Rafael Nadal is out of the ATP Finals in London next week after revealing his season has been ended prematurely by injury.

Nadal announced on Facebook that he is to undergo ankle surgery after the abdominal injury which forced him to miss the Paris Masters had also ruled him out of the tournament.

The Spaniard said: “Since the problem in the abdominal muscle also prevents me from playing in London, we take advantage of the moment to remove the free body [in the ankle] and avoid future problems.

“This way I hope to be in full condition for the next season.”