New Zealand centre Ryan Crotty is facing up to a month on the sidelines after fracturing his jaw in the All Blacks’ thumping 51-20 win over Australia.
The Crusaders back was called up to replace Ma’a Nonu who picked up a back injury during the 12-12 draw in Sydney a week ago.
Crotty was impressive during the first half of the victory over the Wallabies at Eden Park but was forced off at the interval after sustaining his facial injury.
"Ryan is out for four weeks. He's cracked a bone in the top of his jaw," New Zealand coach Steve Hansen stated on Sunday. "It's really unfortunate for him."
There is better news of Nonu who is expected to be fit to return to the starting XV when they face Argentina on September 6 in Napier.
However, fly-half Dan Carter - who broke a bone in his leg during the Super Rugby final – is not expected to return until later in September with Hansen determined not to rush back his star No. 10.
"We're not going to rush that either," Hansen added of Carter. "We want to make sure that he's right to play.
"There's probably a likelihood that if he's not right we won't do that. We won't just rush him straight in. We want him to be feeling really comfortable and excited about being back when the time is right to be back."