Wales have suspended Josh Adams from their first two rugby union Six Nations matches after he breached coronavirus protocols.
He'll miss Sunday's opener against Ireland and their following clash with Scotland after attending a family gathering last weekend.
The Cardiff Blues wing has apologised for an "error of judgement".
Everyone in the Welsh squad has tested negative for COVID-19.
Adams said, "I would like to apologise unreservedly.
“When out of camp, at the weekend, I made an error of judgement. I attended a small gathering of immediate family to celebrate a family milestone.
“It was wrong to do this. I’m aware that everyone needs to follow the rules and being in the public eye I have a responsibility to lead by example and I’ve fallen short on this occasion.
“I’d like to apologise to my teammates and to our supporters for my mistake.”
Wales head coach Wayne Pivac added, "We are extremely disappointed with the breach and have acted robustly and swiftly to take all appropriate measures.
“All players and management have received detailed briefings and education regarding our protocols, and everyone has a responsibility to abide by the rules.
“On this occasion, Josh has made an error of judgement, he made a mistake and he has shown immediate remorse.
“He was present at a small, immediate family gathering to celebrate a milestone with those close to him but that is against the rules and action had to be taken.”