LONDON, July 9, 2016 (Xinhua) -- Serena Williams of the United States celebrates during the women's singles final with Angelique Kerber of Germany on Day 12 at The Championships Wimbledon 2016 in London, Britain on July 9, 2016. Serena Williams won 2-0.(Xinhua/Han Yan)

LONDON, July 9, 2016 (Xinhua) -- Serena Williams of the United States celebrates during the women's singles final with Angelique Kerber of Germany on Day 12 at The Championships Wimbledon 2016 in London, Britain on July 9, 2016. Serena Williams won 2-0.(Xinhua/Han Yan)

LONDON, July 9, 2016 (Xinhua) -- Serena Williams (L) of the United States and Angelique Kerber of Germany pose with their trophies after the women's singles final on Day 12 at The Championships Wimbledon 2016 in London, Britain on July 9, 2016. Serena Williams won 2-0. (Xinhua/Ye Pingfan)