Andy Murray says he is physically feeling "a little bit better every day" after returning to the practice courts in preparation for the 2019 season.
Murray, 31, ended his season early to focus on making "big improvements", having played in six events since returning from hip surgery in June.
The Scot will train in Miami next month before making his competitive return at the Brisbane International in January.
"I'm getting closer," said the former world number one.
The Briton, now ranked 263rd in the world, has not played since losing to Spain's Fernando Verdasco in the Shenzhen Open in September.