A hamstring scare has made Novak Djokovic cut short practice before next week's Australian Open.
Djokovic was practising with Daniil Medvedev at Melbourne Park for the first time since his deportation last year.
The 35-year-old said he had to cut short his practice match because he was afraid of taking a risk
"I just want to avoid any bigger scares before the Australian Open," Djokovic told local broadcaster 9News Melbourne.
"I just felt it pulling and I didn't want to risk anything worse.
"I played a set and apologised to [Medvedev] and he was understanding."
The 21-time Grand Slam champion added that the same hamstring had troubled him last week when he endured to claim the Adelaide title.
Djokovic is aiming for a record-extending 10th title at the Australian Open and a record-equalling 22nd men's major.
Rafa Nadal, defending champion is the top seed at the 2023 Australian Open in the absence of injured world No 1 Carlos Alcaraz.