Heather Miriam Watson (born 19 May 1992) is a Guernsey-born British professional tennis player and former British No. 1. She has won nine titles over her career, including the mixed-doubles title at the 2016 Wimbledon Championships with Henri Kontinen, which made her the first British woman to win a Grand Slam title since Jo Durie in 1991, and the first to win a Wimbledon title since Durie in 1987. In October 2012, Watson won her first WTA singles title at the Japan Open, becoming the first British woman to win a WTA singles title since Sara Gomer in 1988.
In her junior career, Watson won the US Open and gold at the 2008 Commonwealth Youth Games. She reached No. 3 in the world on the ITF Junior Circuit.

Danka Kovinić (Serbian Cyrillic: Данка Ковинић; born 18 November 1994) is a Montenegrin professional tennis player and a member of the Montenegro Fed Cup team. On 22 February 2016, she reached a career-high singles ranking of world No. 46, and on 20 June 2016, she peaked at No. 67 in the WTA doubles rankings.