The world No.1 made the surprise announcement on social media
The world No.1 has become the latest player to withdraw from the Premier event in Qatar.
The women's final attracted some impressive TV figures.
At the age of 21 Osaka has managed to achieve something that no other tennis player from her continent has.
Charleston Post and Courier columnist James Beck reflects on Naomi Osaka's Historic win at the Australian Open!
Stuart Fraser from The Times chats with Ubitennis about Naomi Osaka's triumph in Melbourne Park.
After failing to convert three consecutive match points in the second set. the 21-year-old has become the first Japanese player to win the Melbourne title.
Sasha Bajin reflects on his work with the reigning US Open champion.
The 20-year-old is now on a 13-match winning streak in grand slam tournaments.
The world No.4 reflects on her current form as she climbs to a new ranking high.
Naomi Osaka progressed to the Australian Open semi-final and moved ahead in the race for World No.1 with a dominant win over Svitolina.
Sasha Bajin speaks out about his work with the world No.4.
US Open champion Naomi Osaka gave an honest assessment of her attitude during her semi-final defeat to Lesia Tsurenko in Brisbane.
The world No.5 is closing in on her first tour title since the US Open.
The 21-year-old is looking to continue her rise on the women's tour.
The world No.5 has surges in popularity over the past 12 months.
The world No.5 has been given the title following her dramatic US Open clash with Serena Williams.
The sudden surge in interest surrounding the US Open champion is inevitable, but not necessarily good.
Angelique Kerber fights past Naomi Osaka in the battle of the grand slam champions to keep her semi-final hopes alive.
In the clash between the winners of the past two editions of the US Open Sloane Stephens started her WTA Finals campaign with a 7-5 4-6...