Lock Bradley Davies will miss Wales’ two-Test tour to South Africa in June because of a hamstring injury.
The Cardiff Blues lock, 27, who is heading to Wasps, suffered the problem in training and has undergone surgery.
Meanwhile, Racing Metro flanker Dan Lydiate is out of Friday’s Wales Probables v Possibles trial in Swansea.
But Lydiate’s hamstring strain is not expected to rule him out of the tour, which starts with a warm-up against Eastern Province Kings on 10 June.
The Wales rugby player flattened by a swinging arm from New Zealand hooker Andrew Hore suffered three-day memory loss as a result of the incident.
New Zealand hooker Andrew Hore has been cited by the IRB’s independent Citing Commissioner for allegedly striking an opponent during the match between Wales and New Zealand at the Millennium Stadium on Saturday.