Tennis legend Martina Navratilova has praised Japanese star Naomi Osaka, who was recently named Sports Illustrated Sportsperson of the year, for her powerful comments on equality and social justice.

According to tennisnow.com, Navratilova wrote in her column: "Naomi came to understand the power of fame well and learned how to use it for the greater good. How cool is that? She used her platform to raise awareness of violence against black Americans by the police and others and to foster the conversation about how to combat it."