Wales forward Alun-Wyn Jones has been ruled out of next Saturday's RBS 6 Nations Championship clash against Scotland in Cardiff.
The Ospreys lock suffered an ankle ligament injury during Wales' 26-19 victory over England at Twickenham on Saturday.
Wales coach Warren Gatland, though, expects Jones to recover in time for the Millennium Stadium appointment with Italy on February 23.
Gatland has called up 30-year-old Cardiff Blues lock Deiniol Jones to the squad.
Deiniol Jones won the last of his three caps against South Africa in 2004, and he is likely to be on the bench next weekend, with Ian Evans starting alongside second-row partner Ian Gough.
Flanker Jonathan Thomas, meanwhile, will continue to undergo tests this week after his Twickenham experience lasted barely 15 minutes.
A dazed Thomas was helped off after he was on the receiving end of a Jonny Wilkinson tackle.
England fly-half Wilkinson, whose arm smashed into Thomas' face, could be cited following the incident, although there appeared to be no intent on his behalf, and Wales have not complained.
Match commissioner John West has until early this evening to decide on any possible citing.
At this stage, Thomas has not been ruled out of the Scotland game, although Gatland is due to announce his starting line-up at lunchtime on Tuesday.