Kiki Bertens is a Dutch former professional tennis player. Her career-high WTA singles ranking was world No. 4, which she reached on 13 May 2019, becoming the highest-ranked Dutch female player ever. Her career-high doubles ranking of world No. 16, she achieved in April 2018. She won ten singles and ten doubles titles on the WTA Tour including 2018 Cincinnati Open and 2019 Madrid Open. Bertens was widely regarded as a clay court specialist, but also was successful on hardcourt.

Olga Mykolayivna Savchuk is a retired tennis player from Ukraine. Savchuk grew up in the city of Makiyivka in Donetsk province. She resides in Nassau, Bahamas.