Wales head coach Warren Gatland has stressed that he expects Liam Williams to play a part in this autumn's Rugby World Cup, despite facing up to 10 weeks on the sidelines.

The full-back underwent surgery on Wednesday to rectify a foot complaint, making him a major doubt for the showpiece competition which gets underway in mid-September.

However, Gatland insists that he remains "optimistic" 23-time capped Williams will be ready in time to play a part for Wales.

"Maybe he'll be back for the Italy week," Gatland is quoted as saying by the South Wales Evening Post. "We'll have to make a call and see how he recovers. It's too early. He's only had the operation yesterday. But I am optimistic, yes."

Wales were rocked last month by the news that centre Jonathan Davies will miss the World Cup with an injury problem of his own.