Rafael Nadal bidding to recover from knee troubles, struggled with his movement during an exhibition match against Lleyton Hewitt at London's Hurlingham Club, losing 6-4 6-3. The World No 1 will now decide whether to play at Wimbledon after an exhibition match against Stanislas Wawrinka today.

The player's uncle andu00a0 coach Toni Nadal said after the Hewitt match: "He is having difficulties bending and it seems his treatments aren't enough. "I don't know (if he will defend his title), we have to wait for Friday."

Nadal has said on his website that he'd take a final call on Wimbledon after that match. He has previously conceded that he would not play if he wasn't 100 percent.

"I love to play at the Hurlingham Club. Today's match was a real test, as close to reality as it could get. I will come back and play again and then make my decision about playing at Wimbledon or not," he said. Nadal struggled throughout today's match his first since losing to Robin Soderling in the fourth round of the French Open.