Three-time champion Serena Williams says she will do all she can to improve her game ahead of Wimbledon after being knocked out of the French Open.

The American was expected to advance on Saturday, but she was stunned by Sofia Kenin in the third round.

Williams crashed out at Roland Garros after losing 6-2 7-5 as she failed to find her rhythm in Paris.

Saturday’s defeat was Williams’ earliest Grand Slam exit since 2014 and the fan favourite now faces four weeks of training before Wimbledon starts. She may now consider a pre-tournament warm-up after admitting that her game is not ready for the event at SW19.

“I’m working on getting there. I think it will be enough time,” she said.

“I haven’t been able to be on the court as much as I would have. At least I can start trying to put the time in now. I’m definitely feeling short on matches and just getting in the swing of things. I don’t really like playing out points when I practise.

“I have some time on my hands, so maybe I’ll jump in and get a wildcard on one of these grass-court events and see what happens.”

Saturday’s defeat means Williams’ bid to equal Margaret Court’s all-time record of 24 Grand Slam singles titles continues. She remains the 5.00 favourite to win at Wimbledon, with Petra Kvitova next in the betting at 7.00.

Williams’ exit in Paris also boosts Simona Halep’s chances of winning the title. She is 2.60 to successfully defend her French Open crown, while Spain’s Garbine Muguruza is second favourite at 8.50.