US Open: Nadal not sure when he will return after loss to Frances Tiafoe

Rafael Nadal says he does not know when he will play again after losing in the US Open fourth round.
The 36-year-old Spaniard, whose wife is pregnant, was beaten in four sets by American Frances Tiafoe on Monday.
“I need to go back. I need to fix things, life, then I don’t know when I’m going to come back,” said the 22-time Grand Slam champion.
“I’m going to try to be ready mentally. When I feel that I will be ready to compete again, I will be there.”
Nadal is scheduled to be playing in the Laver Cup, alongside Roger Federer, Novak Djokovic and Andy Murray, in London from 23-25 September.
The loss to 22nd seed Tiafoe was Nadal’s first defeat in a Grand Slam this year.
The US Open, which he was bidding to win for a fifth time, was only the second tournament he had played since pulling out of the Wimbledon semi-finals with an abdominal injury.
After an opening defeat by Borna Coric in Cincinnati, Nadal went to New York and was never fully comfortable in his opening two wins.