The Japanese No.1 joins Simona Halep and Angelique Kerber in the field.
The Romanian will meet with doctors over the next few days to formulate a plan.
The three-time Grand Slam doubles championship is expecting.
US Open finalist offers comeback advice.
Coco Gauff and Alexa Noel recorded the championship-clinching point for the stars and stripes.
The Canadian marches into the second round at Tokyo behind brilliant shotmaking
The Swiss Miss announced the news on her birthday.
