2021/05/08 03:41 Sofia Kenin of USA in action against Anett Kontaveit of Estonia, during their WTA Tour Ladies Singles Round of 16 tennis match at the Porsche Arena in. Sofia Kenin of USA in action against Anett Kontaveit of Estonia, during their WTA Tour Ladies Singles Round of 16 tennis match at the Porsche Arena in Stuttgart, Germany, Wednesday April 21, 2021. (Thomas Kienzle/Pool via AP) Anett Kontaveit, right, wins in two sets against Sofia Kenin of USA, during their WTA Tour Ladies Singles Round of 16 tennis match at the Porsche Aren. Anett Kontaveit, right, wins in two sets against Sofia Kenin of USA, during their WTA Tour Ladies Singles Round of 16 tennis match at the Porsche Arena in Stuttgart, Germany, Wednesday April 21, 2021. (Thomas Kienzle/Pool via AP)