Overview
- Maria Sakkari defeated Naomi Osaka 6-4, 6-2 at RAC Arena in the United Cup.
- Osaka said she had been really sick since around Christmas, likely contracted from her daughter, and described herself at the tail end of the illness.
- She was seen coughing and appeared low on energy, with early serving issues that included three double faults and several failed ball tosses.
- Stefanos Tsitsipas beat Shintaro Mochizuki 6-3, 6-4 to clinch the tie for Greece over Japan.
- Osaka plans a day-by-day recovery and hopes to be ready for the Australian Open starting January 18.