Latisha Chan, formerly known by her Chinese name Chan Yung-jan, is a Taiwanese professional tennis player who is a former world No. 1 in doubles. She has won 33 career titles in doubles, including a Grand Slam title at the 2017 US Open alongside Martina Hingis, as well as nine at WTA 1000-level. Chan also finished runner-up at three other Grand Slam events, the 2007 and 2015 Australian Open, and the 2007 US Open. In mixed doubles, she has won three Grand Slam titles: the 2018 French Open, 2019 French Open, and 2019 Wimbledon Championships, all with Ivan Dodig. Highlights of her singles career include reaching the semifinals at the 2006 Japan Open and the final at the Bangkok Open in 2007. She reached a career-high singles ranking of No. 50 on 11 June 2007, and became world No. 1 in doubles on 23 October 2017, the second Taiwanese player to do so, after Hsieh Su-wei. She again topped the doubles rankings on 13 August 2018, and has spent a total of 34 weeks as world No. 1.

Martina Hingis is a Swiss former professional tennis player. Hingis was the first Swiss player, male or female, to have won a major title and attain the world No. 1 ranking. She spent a total of 209 weeks as the singles world No. 1 and 90 weeks as doubles world No. 1, holding both No. 1 rankings simultaneously for 29 weeks. She won five major singles titles, 13 major women's doubles titles, and seven major mixed doubles titles, for a combined total of 25 major titles. In addition, she won the season-ending WTA Finals two times in singles and three in doubles, an Olympic silver medal in doubles, and a record 17 Tier I singles titles.