Serena Williams beats Li Na in WTA Championships final, finishes 2013 with 78-4 win-loss record - ABC News
![FILE--Retired Chinese tennis star Li Na poses during a brief retirement ceremony during the 2014 WTA Wuhan Open tennis tournament in Wuhan city, cen Stock Photo - Alamy FILE--Retired Chinese tennis star Li Na poses during a brief retirement ceremony during the 2014 WTA Wuhan Open tennis tournament in Wuhan city, cen Stock Photo - Alamy](https://c8.alamy.com/comp/W8J3YH/file-retired-chinese-tennis-star-li-na-poses-during-a-brief-retirement-ceremony-during-the-2014-wta-wuhan-open-tennis-tournament-in-wuhan-city-cen-W8J3YH.jpg)
FILE--Retired Chinese tennis star Li Na poses during a brief retirement ceremony during the 2014 WTA Wuhan Open tennis tournament in Wuhan city, cen Stock Photo - Alamy
![Tennis Server ATP/WTA Pro Tennis Showcase - 2006 Pilot Pen International - New Haven, Connecticut - Na Li / Maria Kirilenko Tennis Server ATP/WTA Pro Tennis Showcase - 2006 Pilot Pen International - New Haven, Connecticut - Na Li / Maria Kirilenko](http://www2.tennisserver.com/turbo/images/pilotpen06/060820/Li1.jpg)