Serena Williams loses on comeback

A slow moving Serena Williams suffered defeat on her comeback from a maternity break as French Open champion Jelena Ostapenko powered to victory in the "first to ten points" final set at the Abu Dhabi exhibition tournament on Saturday.

The 36-year-old Williams looked static and far from full fitness just four months after the birth of her first child and Ostapenko, a 20-year-old Latvian, won 6-2, 3-6, 10/5.

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"The first match is always really hard after a break," Williams said.

"I was just glad to be here," she said.

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The former world No.1 who gave birth to a daughter in September is hoping to defend her Australian Open title when the tournament gets underway January 15.