Former world No. 1 Naomi Osaka retired from the ASB Classic final in Auckland on Sunday due to an abdominal injury after winning the first set against Clara Tauson.

Naomi Osaka’s fitness for the Australian Open is in question after the four-time Grand Slam champion and former No. 1 suffered an apparent abdominal injury while playing the final of a WTA tournament in Auckland.

Naomi Osaka retired from the Auckland final in shocking and devastating scenes as the No. 7 seed was up by a set when she had to call a medical timeout and call it a day. On Sunday, the former world No.