Serena Williams won the China Open despite not playing sharp tennis Sunday, facing a match point in the second set and going on to beat U.S. Open champion Svetlana Kuznetsova 4-6, 7-5, 6-4. ``I just never gave up. I really didn't want to lose today,'' the top-seeded Williams said. ``I haven't won a title since March, which really isn't like me.'' Williams ended Kuznetsova's 14-match winning streak.