Wallabies star cited for "dog act" as All Black out for season

Australian lock Darcy Swain has been cited for appearing to deliberately target the leg of Quinn Tupaea during the All Blacks' controversial 39-37 victory over the Wallabies.

In the 35th minute of the clash, Swain dived with force into Tupaea's knee as the All Blacks midfielder was engaged over the ball in a ruck.

Tupaea went down in pain after his left knee buckled inwards. He was helped off the field by medical staff and was later seen in a knee brace.

All Blacks coach Ian Foster confirmed on Friday that Tupaea will be sidelined for at least three months due to a ruptured medial cruciate ligament in his left knee, meaning he will miss the remainder of the season.

Foster said Tupaea also suffered a partial tear of his anterior cruciate ligament, but wasn't sure if the midfielder would require surgery.

Swain was cited for the act of foul play and will face a judicial hearing, Foster added.

Sanzaar later issued a statement saying the citing comissionner deemed the incident had met the red card threshold for foul play.

"Swain is alleged to have contravened Law 9.11: Players must not do anything that is reckless and dangerous to others," the statement said.

The case will be considered by the foul play review committee on Monday.

During the match, the television match official Ben Whitehouse reviewed the incident before referee Mathieu Raynal decided that Swain deserved a yellow card.

"That is your responsibility to not put yourself in a reckless position which can seriously injure the player," Raynal told Swain after reviewing the footage. "You cannot target the lower legs, it's dangerous so it's a yellow card."

The Wallabies were reduced to 13 players after Tom Wright was also sent to the bin shortly before for cynical play.

Fans and pundits took to social media to criticise Swain's act, with many saying he should've seen red.

Former All Blacks first-five Lima Sopoaga was one of many calling for a lengthy ban for Swain: "Hope there is a lengthy ban for rubbish like this."

Former England No 10 Andy Goode described the foul play as "shocking", while also adding that Swain should've been red carded.

Swain was also involved in controversy during the Wallabies' test series with England earlier this year when he was sent off for head-butting England lock Johnny Hill.

Swain later justified the head-butt by revealing that he was goaded by Hill throughout the first test in Perth: "I was angry that he was assaulting me like this, and I wanted him to get the message it wasn't okay."