France defender Lucas Hernandez has been ruled out of the rest of the World Cup because of the knee injury he picked up in the win against Australia.

The 26-year-old Bayern Munich left-back ruptured the anterior cruciate ligament of his right knee in the defending champions’ 4-1 opening-game victory.

Several key France players, including Real Madrid’s Karim Benzema, were injured before the tournament started.

“I am extremely sorry for Lucas,” said manager Didier Deschamps.

“We are losing an important element. Lucas is a warrior and I have no doubt he will do everything possible to return to the game.

“On behalf of the group, I wish him the best possible recovery.”

The extent of Hernandez’s injury was confirmed by an MRI scan on Wednesday morning.

He went down clutching his knee in the 13th minute in the build-up to Australia’s opening goal.