Wales back-row forward Josh Navidi has been ruled out of the Rugby World Cup with a hamstring injury.
Warren Gatland confirmed Navidi would miss the rest of the tournament because of the injury suffered in the quarter-final victory over France on Sunday.
Gatland told a news conference the Cardiff Blues No 8 would be replaced with a back rather than a forward due to concerns over others in the squad - principally centre Jonathan Davies, who missed Sunday's match with a knee injury.
"It is a Grade Two hamstring, so it is at least a couple of weeks," said Gatland. "It is disappointing for him. He has been very influential and very important for us in the past year.
"Given we brought six back-rowers and have five fit at the moment and have been a little bit short in numbers in the backs then that will probably be a back who comes out as a replacement.
"We have just got to wait to get approval from World Rugby.
"Elsewhere, there are a few sore bodies, but everyone is ready to go. He (Davies) should be at training. He was touch and go for the weekend but it is just a light training session tomorrow."
Wales play South Africa in the semi-finals in Yokohama on Sunday, the third time in succession the two teams have met during a World Cup.