Ekaterina Valeryevna Makarova is a Russian former professional tennis player who was ranked world No. 1 in doubles, and world No. 8 in singles.

Nadezhda Viktorovna "Nadia" Petrova is a Russian former professional tennis player. A former top-five player in both singles and doubles, she reached a career-high ranking of No. 3 in the world in both disciplines. Petrova won a total of 37 titles on the WTA Tour in her career, 13 in singles and 24 in doubles, as well as over $12.4 million in prize money, making her one of the most successful Russian tennis players of all time.