Arsenal and England forward Theo Walcott is set to miss the FIFA World Cup after rupturing the anterior cruciate ligament in his left knee.
The 24-year-old suffered the injury in Arsenal's FA Cup third-round victory over rivals Tottenham on Saturday.
Although Walcott appeared in good spirits as he was taken from the field on a stretcher, signalling the 2-0 scoreline to Tottenham fans, he is now facing surgery and a lengthy lay-off.
A statement from Arsenal read: "After coming off injured in Saturday's 2-0 win against Tottenham Hotspur, the Club regrettably announces that Theo Walcott has sustained a ruptured anterior cruciate ligament of his left knee.
"Theo will have surgery in London in the near future and is expected to be out for at least six months, therefore missing the remainder of the season and the World Cup in Brazil in the summer.
"Everyone at Arsenal wishes Theo a speedy recovery and we look forward to seeing him back on a football pitch as soon as possible."