Rafael Nadal admitted he "doesn't know" if he can win Wimbledon again after suffering a shock first round defeat to Steve Darcis - the Spaniard's second early exit in two years.
Asked whether he thinks he will ever add to his two Wimbledon titles, Nadal said: "I don't know. The only thing I can say and I can do is keep working hard.
"I hope to have a few more years to play here and to play at the right level. I was not able to play great this year and last year, but I will try. I'm not happy, but life continues."
Nadal was knocked in the second round of last year's tournament by outsider Lukas Rosol of the Czech Republic.
Andy Murray has become the first British tennis player to win the men's singles title at Wimbledon for 77 years.
If you can't face the queues for Murray Mound at Wimbledon, several outdoor big screens in London are showing the men's final for free.
Germany's Sabine Lisicki is set to play France's Marion Bartoli in the women's Wimbledon final today.