Caroline Wozniacki is a Danish professional tennis player. She was ranked world No. 1 in singles for a total of 71 weeks, including at the end of 2010 and 2011. She achieved the top ranking for the first time on 11 October 2010, becoming the 20th player in the Open Era and the first from a Scandinavian country to hold the top position. In 2018, she became the first Dane to win a major singles title, at the Australian Open.

Magdaléna Rybáriková is a Slovak former professional tennis player. In her career, she won four singles titles and one doubles title on the WTA Tour. Rybáriková reached the semifinals of the 2017 Wimbledon Championships and broke into the top 30 for the first time in September 2017, and reached a career-high singles ranking of No. 17, in March 2018.