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Australia’s Kurtley Beale attempts to stop New Zealand’s Ryan Crotty during the Bledisloe Cup Rugby Championship match at the ANZ Stadium in Sydney. Image Credit: Reuters

Sydney: The All Blacks return to New Zealand triumphant after another Rugby Championship demolition of the Wallabies but with concerns over the long-term health of Ryan Crotty.

The inside centre was knocked out in a clash of heads with new midfield partner Jack Goodhue in the first half of the 38-13 rout at Sydney’s Olympic Stadium and played no further part in the match.

The 29-year-old has suffered a litany of head knocks over the past two seasons, missing games for the Canterbury Crusaders in Super Rugby earlier this year, and will be sidelined for Saturday’s return match at Eden Park.

His sister Shea Crotty, who has played basketball for New Zealand, aired her concerns on social media.

“Know how frustrated he will be but for selfish reasons I want to see my brother grow old and able, not battling the brain forever,” she wrote on Twitter.

All Blacks coach Steve Hansen lamented Crotty’s “bad luck” to be hit by friendly fire and said a specialist had already given the midfielder the “all-clear”.

 Know how frustrated he will be but for selfish reasons I want to see my brother grow old and able, not battling the brain forever.”

 - Shea Crotty » Ryan Crotty’s sister 


Flanker Sam Cane, however, was circumspect about the “fickle” nature of head injuries.

“Everything else has a timeframe but there’s just so much unknown with head knocks and it seems like you can be only one away, if it’s the wrong one, from it being then end of it,” Cane told reporters in Sydney on Sunday.

With Sonny Bill Williams already ruled out with injury, the All Blacks will have to dig deep into their midfield stocks.

Anton Lienert-Brown, who replaced Crotty on Saturday, or Ngani Laumape are likely to start at inside centre, with the uncapped Vince Aso a chance to be called up as injury cover.

The All Blacks will also be without winger Rieko Ioane, who suffered a hamstring strain, which opens the door for a recall to Nehe Milner-Skudder.

Injuries aside, Hansen would have been immensely pleased with the performance of the champions, who notched their 13th successive win in the tournament after going undefeated in the last two campaigns.

Captain Kieran Read made a solid return to the side after a long lay-off from back surgery while lock Brodie Retallick was brilliant in his first test for nearly a year, scoring a second half try and adding huge drive to the All Blacks’ scrum.

Australia fullback Israel Folau, meanwhile, has been ruled out of the second clash against the All Blacks in Auckland after sustaining an ankle injury in the opener.

Folau fell awkwardly after an aerial contest during the second half of the 38-13 loss at Sydney’s Olympic Stadium and hobbled off the ground.

The dual international’s loss for next Saturday’s match is a huge blow for the Wallabies, who have not won at Eden Park in 32 years.

“He just got a small tear in a muscle, right down low. Quite rare, really, but it’s actually not a long-term injury at all,” Wallabies coach Michael Cheika told reporters at Sydney airport on Sunday ahead of the team’s flight to Auckland.

The Springboks beat Argentina 34-21 in their Rugby Championship opener on Saturday.