who is ranked first in women's tennis
List of WTA number 1 ranked tennis players On 11 September 2017, Garbiñe Muguruza and Rafa Nadal made Spain the first country since the United States 14 years ago to simultaneously top both the ATP and the WTA rankings, with Muguruza making her debut in the No. 1 spot. The first such pair were Serena Williams and Andre Agassi, 28 April to 11 May 2003.[3]