Former world No. 1 Naomi Osaka reached her first semi-final in almost three years after she came from behind to beat Hailey Baptiste 6-7(2), 6-1, 6-2 at the ASB Classic.

Osaka had won the first set of the final 6-4 against Denmark's Clara Tauson when she spoke to her coach Patrick Mouratoglou, the chair umpire, and a tour trainer before deciding to withdraw.

Naomi Osaka is set to undergo an MRI to determine the extent of her abdominal injury but notes that she is feeling positive that it is nothing more than a minor issue that won't prevent her from competing at the Australian Open.