Li Na: It's hard for anyone to dominate WTA tour like Steffi Graf or Serena Williams

During an exclusive interview earlier in December, two-time Grand Slam champion Li Na reviewed the 2017 season. As she commented, “Currently is very hard for women players to dominate (the WTA tour) like Steffi Graf or Serena Williams. Now all the women players have a chance to win their maiden or second Grand Slam title because the competition is so tight.” Subscribe to us on YouTube: https://goo.gl/lP12gA Download our APP on Apple Store (iOS): https://itunes.apple.com/us/app/cctvn... Download our APP on Google Play (Android): https://play.google.com/store/apps/de... Follow us on: Facebook:   / chinaglobaltvnetwork   Instagram: https://www.instagram.com/cgtn/?hl=zh-cn Twitter:   / cgtnofficial   Pinterest:   / cgtnofficial   Tumblr:   / cctvnews   Weibo: http://weibo.com/cctvnewsbeijing