Johanna "Jo" Konta (/ˈkɔːntə/; born 17 May 1991) is a British tennis player who represented Australia until 2012. She has won two singles titles on the WTA tour, as well as 11 singles and four doubles titles on the ITF circuit in her career. Konta reached her best singles ranking of World No. 9 on 10 October 2016. On making her top ten debut, Konta was the first Briton to be ranked amongst the WTA's elite since Jo Durie over 30 years previously. She is the current British number one. Her doubles ranking peaked at No. 88 on 1 August 2016.