New York, Dec 25: American tennis idol Sere Williams will soon return to action after almost a year of absence due to maternity leave. The 23-time Grand Slam champion will participate in the Mubadala World Tennis Championship in Abu Dhabi on December 30 against French Open champion Jele Ostapenko of Latvia. "I am delighted to be returning to the court in Abu Dhabi for the first time since the birth of my daughter in September," Sere said in a statement on Sunday.