Japan's Akane Yamaguchi retains badminton women's world title
The top-seeded Yamaguchi, who won her first world title last year in the Spanish city of Huelva, had to dig deep to see off the challenge of Olympic champion Chen. Chen was bidding to become the first player from badminton powerhouse China to win a women's singles world title since 2011. China has won a total of 15 women's singles world titles -- five times more than any other country -- but number four seed Chen was the nation's first women's world finalist since 2014.
