Five who played on despite concussion

Christoph Kramer

Germany defensive midfielder’s face slammed into Ezequiel Garay’s shoulder during Germany’s 1-0 win over Argentina in the 2014 World Cup final. He kept on playing despite asking: ‘ref, is this the final?’

Alvaro Pereira

Uruguayan wing-back took Raheem Sterling’s knee to his forehead and was cleanly knocked out in Uruguay’s 2-1 2014 World Cup group stage win over England, but he overruled team officials to continue playing.

Pablo Zabaleta

Argentinian right-back’s head collided with Dirk Kuyt’s shoulder during Argentina’s 2014 World Cup semi-final win over Holland. Medics put tissue in his mouth to stem the bleeding and sent him back out to play.

Javier Mascherano

Argentinian defensive midfielder went up for a header and clashed heads with Georginhio Wijnaldum during Argentina’s 2014 World Cup semi-final win over Holland, but was left to play on despite being clearly disorientated.

Thibaut Courtois