Six-time champion Novak Djokovic will head into next week's Australian Open uncertain of how his elbow will react to competition after a six-month break.
The Serb, 30, has not played since retiring against Tomas Berdych in the quarter-finals of Wimbledon in July.
Djokovic has not undergone surgery, but the decision to play in Melbourne was left until the eve of the tournament.
"It hasn't yet been 100% healed but right now it's at the level where I can compete," he said.
"Every day is getting better. I'm hoping that it can be 100% at the start of the tournament.