Liam Williams a 'long-term' Wales full-back option - Simon Easterby

Liam Williams could challenge Leigh Halfpenny to be first-choice full-back for Wales, says his Scarlets head coach Simon Easterby.

Williams, 22, was man-of-the-match in the 51-3 win over Scotland , and Easterby said: "He came through as we expected really with flying colours.

"[He] really gave the selectors, longer term, something to think about."

Halfpenny will miss this summer's tour of South Africa after undergoing surgery on his dislocated shoulder.

The 25-year-old Cardiff Blues back, who will join Toulon in the summer, suffered the injury during Wales' Six Nations defeat by England at Twickenham and was replaced by Williams.

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He [Williams] was outstanding and involved with a lot of the positive stuff that happened in the Scottish match

Simon Easterby Scarlets head coach

Williams started Wales' final Six Nations match against Scotland in Cardiff and regional boss Easterby said he took full advantage of his opportunity.

"He's been great for us all season but he hasn't had much opportunity for Wales," Easterby added.

"Unfortunately for Halfpenny he gets injured against England and the door opens for Liam to show exactly what he can do.

"He was outstanding and involved with a lot of the positive stuff that happened in the Scottish match."

Williams is among the Wales contingent who will be available for Scarlets' Pro12 game away to Glasgow Warriors on Saturday.

However, Scarlets are likely to be without Rhys Priestland for the game at Scoutston after the fly-half picked up a knock in the victory over Scotland.