New Zealand hooker Dane Coles will miss the Bledisloe Cup clash with Australia on Saturday after suffering another head injury setback.
Coles spent four months on the sidelines and revealed he considered retirement as he struggled with concussion before making his comeback in Hurricanes' Super Rugby quarter-final win over Brumbies last month.
The 30-year-old was set to make his All Blacks return for the Rugby Championship clash in Sydney next weekend, but took another knock to the head in the 'game of three halves' against Taranaki and Counties Manukau in Pukekohe on Friday.
Coles was taken off as a precaution and his Hurricanes team-mate Ricky Riccitelli has been called up as cover.
The world champions' medical team will assess Coles, who has 49 caps to his name, in the build-up to the encounter with the Wallabies, but he will play no part at ANZ Stadium.
Nehe Milner-Skudder and David Havili will also miss the trans-Tasman after they were released from the All Blacks squad.
New Zealand go into the match as strong favourites, but captain Kieran Read knows Michael Cheika's men are capable of turning it on.
"They've got something that we know if they put it together they're a dangerous side." he said.
"Our respect to them is we turn up and play as well as we can because we know what they can bring. So I think that shows on the field.
"Our biggest respect to opposition is that we go out there and bring the best game that we can. That shows that we respect them and we're going to go out there and do that again next week."
|Alonso is the most complete driver in F1, says Button|
|Alonso to stay with McLaren|
|Nets guard Jeremy Lin out for season with ruptured patella tendon|
|Coles hails retiring Moore as ´one of the greats´|
|Benteke progressing ´ahead of schedule´|
|Ancelotti to Leicester unlikely, says Clement|
|Berdych´s World Tour Finals chances ended by back injury|
|Dyche not aware of any approach amid Leicester speculation|
|I love you, take my watch! – How Arnautovic earned a special gift from Mourinho|
|Hafeez reported for suspect bowling action|
|´Surprised´ Appleton calls for Foxes focus after Shakespeare sacking|
|Harris: Stokes should follow Warner´s example|
|Brighton boss Hughton feels ´unacceptable´ behaviour remains in football|
|Markram replaces rested Amla for final ODI|
|Benzema ´very happy´ at Real Madrid amid Arsenal rumours|
|Azpilicueta admits to low mood in Chelsea camp|
|Lozowski ends exit talk by signing Saracens extension|
|Button reveals where he plans to race in 2018|
|Bacca: I played for the worst AC Milan in history|
|I don´t want the dog meat, I want the dog himself - Saunders targeting Golovkin or Canelo|
|Aluko ´100 per cent´ in England contention, says interim boss|
|Injured Napoli striker Milik hints at loan move|
|Dortmund not expecting Reus exit|
|Neymar plans to emulate Messi by mentoring Mbappe|
|Mourinho still unclear on fitness of Pogba and Fellaini|
|Wests Tigers centre Idris retires at 27|
|Sodhi replaces injured Astle in New Zealand´s ODI squad|
|Heynckes happy with Muller form|
|Kane describes Ronaldo as ´role model´ following shirt swap|
|PSG star Mbappe: Monaco need time|
|I have full support of Everton board, claims Koeman|
|England have the right balance for Ashes - Bairstow|
|Thomas pulls clear in South Korea|
|Timberwolves, 76ers fall in anticipated openers|
|Cubs stay alive, Yankees poised to reach World Series|
|Girardi calls Tanaka ´special´ after game five masterpiece|
|Cubs´ Maddon ejected after umpires reverse controversial call|
|Brown hails ´exceptional´ Simmons after 76ers debut|
|Wilshere: Arsenal´s character can´t be questioned|
|Simmons replaces Rodda as Hunt misses out for Wallabies|
|No-one can compete with Messi – Bartomeu|
|Brennan named Titans coach|
|Man United risk losing identity under Mourinho – Bellamy|
|Hayward delivers message to Celtics fans from hospital bed|
|Valverde hopes Messi scores 200th European goal this season|
|Storm, Cowboys to meet in round three in 2018|
|Dodgers´ Roberts all too familiar with historic 3-0 comebacks|
|Maddon on staving off elimination: Cubs have to start hitting ball|
|Stop worrying about Chelsea – Conte hits back at Mourinho|
|Roma better than Chelsea, says Nainggolan|
|Bemelmans stuns Kyrgios in Antwerp, Sock back on track in Stockholm|
|Basel coach Wicky demands more focus|
|Heynckes calls for patience from Bayern´s reserve stars|
|Emery calls for PSG improvement despite perfect start|
|Pique handball instinctive, says Barcelona boss Valverde|
|Dzeko was born to score – Di Francesco|
|Lemonis rues Olympiacos collapse against 10-man Barca|
|Rodgers: Individual class inhibiting Celtic|
|David Luiz experiment failed, admits Conte|
|Banvit claim first win as Petrol Olimpija run out of gas|
|Allegri not impressed despite crucial win|
|Svilar risks a lot – Mourinho was aware of Benfica youngster´s shortcomings|
|We played better against Atletico – Hazard|
|Job done for Mbappe and PSG after another big win|
|Colts QB Luck suffers setback in recovery from shoulder injury|
|Simeone maintains ´absolute´ belief in Atletico despite Qarabag draw|
|Mladenovic slump continues in Moscow, Kontaveit crashes out in Luxembourg|
|Louisville fires AD Tom Jurich amid pay-for-play scandal|
|CSKA Moscow 0 Basel 2: Xhaka, Oberlin do the damage|
|Juventus 2 Sporting CP 1: Late Mandzukic intervention saves wasteful Bianconeri|