Twenty-three time grand slam champion Serena Williams will play her first match since the birth of her daughter when she faces off against French Open winner Jelena Ostapenko at the Mubadala World Tennis Championship in Abu Dhabi next week.

The match with be the 36-year-old Williams’ first in almost a year as she prepares to try to defend her Australian open crown in January, a title she captured earlier this year while pregnant.

Williams and Ostapenko will be the first women to participate in the 10th edition of the Mubadala World Tennis Championship, which has long marked the beginning of the men’s global tennis season.

The championship runs from December 31 to January 2.