Britain's Andy Murray has pulled out of next month's Australian Open because of a pelvic injury.
The three-time Grand Slam champion, 32, was aiming to play in his first Grand Slam singles event since Melbourne 12 months ago, when he announced that his career might be over because of injury.
He will also not play for Great Britain in next month's inaugural ATP Cup.
Murray has not played since Britain's opening tie at the Davis Cup finals last month because of the pelvic issue.
The former world number one, who underwent hip surgery 11 months ago, did not travel to Miami for his scheduled December training block.