Wales head coach Warren Gatland has called prop Harri O'Connor into his Guinness Six Nations squad ahead of their visit to Ireland on Saturday.
The Scarlets forward joins up with Gatland’s group ahead of the Dublin clash against the runaway title favourites (2.15pm, live on RTÉ).
O’Connor, 23, went on as a replacement during a non-cap game between Wales and the Barbarians earlier this season, but he has yet to feature at Test level.
Bath prop Archie Griffin recently withdrew from the squad following a knee injury that he suffered on his Wales debut against England at Twickenham.
O’Connor becomes the second prop to join the squad after experienced Harlequins tighthead Dillon Lewis earlier this month.
Elsewhere, England's prospects of reclaiming the Calcutta Cup from Scotland have been dealt a blow after scrum-half Alex Mitchell was ruled out of the Murrayfield showdown with a knee problem.
The Rugby Football Union confirmed that Mitchell will miss the pivotal Six Nations round-three game because of an injury that requires further investigation before a date for his return can be set.
Harry Randall has been named as the replacement in Steve Borthwick’s 36-man training squad with Danny Care and Ben Spencer competing to fill the void in the number nine jersey in Edinburgh.
Mitchell (above) has established himself as England’s first choice scrum-half since forcing his way into the squad for last autumn’s World Cup despite being dropped early in the build-up campaign.
He started the semi-final defeat by South Africa and retained Borthwick’s approval for the victories over Italy and Wales that have opened the Six Nations.
In both matches he was given more license to play the running game that has seen him unpick defences for Northampton and possibly more than any other player he stood to benefit from England’s greater intent in attack.
Watch Against the Head on RTÉ2 and RTÉ Player tonight at 8pm
Watch Ireland v Wales in the Under-20 Six Nations on Friday from 7.15pm on RTÉ2 and RTÉ Player, follow a live blog on rte.ie/sport and the RTÉ News app
Watch France v Italy in the Under-20 Six Nations on Friday from 7.50pm on RTÉ Player
Watch Ireland v Wales in the Guinness Six Nations on Saturday from 1.30pm on RTÉ2 and RTÉ Player, follow a live blog on rte.ie/sport and the RTÉ News app and listen to live commentary on RTÉ Radio 1
