Naomi Osaka was ‘shocked’ by lack of paid maternity leave in US

• 26-year-old says motherhood has given her new outlook
• Japanese player will attempt to win fourth grand slam

Naomi Osaka has reflected on how motherhood has changed her perspective on tennis and the world as she prepares to make her return to the Australian Open, a tournament she has won twice.

The three-time grand slam champion announced her pregnancy before last year's Australian Open and stepped away from tennis. She gave birth to her daughter, Shai, in July and returned to the tour earlier this month at the Brisbane International.