Six Nations: Dan Biggar now big doubt for Wales showdown with Scotland
Dan Biggar suffered an ankle sprain in Wales' 16-16 RBS 6 Nations draw with Ireland and will be a doubt for the clash with Scotland.
Wales boss Warren Gatland confirmed the fly-half picked up a "high ankle sprain" in yesterday's match at the Aviva Stadium, and suggested Biggar could undergo scans to determine the extent of the problem.
Wales will host Scotland at the Millennium Stadium on Saturday, with Gatland hoping Gareth Anscombe can be available after the tight hamstring that kept him out of the Ireland tie.
"Dan has a high ankle sprain, so we'll know more on that in the next 24 to 48 hours," said Gatland. "Whether he's got to be scanned or not I don't know.
"It's difficult to make assessments so soon after the game.
"I thought Rhys Priestland played well when he came on and we were happy with his performance."
Kiwi-born full-back Anscombe was withdrawn by Wales after suffering a hamstring problem in what head coach Gatland branded a "mature decision".
Now the Cardiff Blues 24-year-old will battle to be fit in time to take on Scotland next weekend.
Gatland was "not satisfied at all" with the draw in Dublin, while captain Sam Warburton insisted Wales' three home matches are now "must-win" contests.
"Even after we lost Dan (Biggar) it didn't really faze us too much, with Rhys coming on and doing well," said Warburton.
"We have got three home games out of four now, and they are must-win matches.
"There was no chance we would have underestimated Ireland. They are always one of the toughest international sides.
"It's one of the toughest games you are going to play. No Welshman will ever underestimate Ireland."