Serena Williams defeated Jennifer Capriati in the final, 6–1, 6–7(7–9), 6–3 to win the women's singles tennis title at the 2001 Canadian Open.
Serena Williams defeated Steffi Graf in the final, 6–3, 3–6, 7–5 to win the women's singles tennis title at the 1999 Indian Wells Open. It was the second and last time that the two would contest a professional match.
Serena Williams defeated Maria Sharapova in the final, 4–6, 6–3, 6–0 to win the women's singles tennis title at the 2013 Miami Open. It was her record sixth Miami Open title, and Sharapova's fifth runner-up finish without winning the title.
The 1999 Pilot Pen Tennis singles was the singles event of the seventeenth edition of the final tournament in the US Open Series. Steffi Graf was the reigning champion, but had retired after the TIG Classic.
Players who neither had high enough rankings nor received wild cards to enter the main draw of the annual US Open Tennis Championships participated in a qualifying tournament held over several days before the event.
Madison Keys defeated Svetlana Kuznetsova in the final, 7–5, 7–6(7–5) to win the women's singles tennis title at the 2019 Cincinnati Masters.
Players who neither had high enough rankings nor received wild cards to enter the main draw of the annual French Open Tennis Championships participated in a qualifying tournament held in the week before the event.
Players who neither had high enough rankings nor received wild cards to enter the main draw of the annual French Open Tennis Championships participated in a qualifying tournament held in the week before the event.
Players who neither had high enough rankings nor received wild cards to enter the main draw of the annual French Open Tennis Championships participated in a qualifying tournament held in the week before the event.
Players who neither had high enough rankings nor received wild cards to enter the main draw of the annual French Open Tennis Championships participated in a qualifying tournament held in the week before the event.
Players who neither had high enough rankings nor received wild cards to enter the main draw of the annual US Open Tennis Championships participated in a qualifying tournament held over several days before the event.
Players who neither had high enough rankings nor received wild cards to enter the main draw of the annual US Open Tennis Championships participated in a qualifying tournament held over several days before the event.
Players who neither had high enough rankings nor received wild cards to enter the main draw of the annual US Open Tennis Championships participated in a qualifying tournament held over several days before the event.
Players who neither had high enough rankings nor received wild cards to enter the main draw of the annual US Open Tennis Championships participated in a qualifying tournament held over several days before the event.
Players who neither had high enough rankings nor received wild cards to enter the main draw of the annual US Open Tennis Championships participated in a qualifying tournament held over several days before the event.
Players who neither had high enough rankings nor received wild cards to enter the main draw of the annual US Open Tennis Championships participated in a qualifying tournament held over several days before the event.
Players who neither had high enough rankings nor received wild cards to enter the main draw of the annual US Open Tennis Championships participated in a qualifying tournament held over several days before the event.
Petra Kvitová defeated Garbiñe Muguruza in the final, 6–2, 6–1 to win the singles tennis title at the 2021 WTA Qatar Open. The final was a rematch of the 2018 final. It was Kvitová's second title at the WTA Qatar Open. Kvitová dropped just one set the entire tournament, to Anett Kontaveit in the quarterfinals.
Iga Świątek defeated Karolína Plíšková in the final, 6–0, 6–0 to win the women's singles tennis title at the 2021 Italian Open. It was her first WTA 1000 singles title, and the 13 points Świątek lost in the championship match is the fewest on record in a WTA 1000-level final. This was the first WTA Tour singles final to be resolved with a 'double bagel' scoreline since Simona Halep defeated Anastasija Sevastova at the 2016 Bucharest Open, and was just the tenth such final in WTA Tour history. With the win, Świątek broke into the top 10 of the WTA rankings for the first time. Both finalists saved match points in prior rounds – Świątek saved two match points in her third round match against Barbora Krejčíková, whilst Plíšková saved three match points in her quarterfinal match against Jeļena Ostapenko.
Kris Kinney (first round)
Masako Yanagi (second round)
Marie-Christine Calleja (first round)
Lea Plchová (first round)
Caterina Nozzoli (first round)
Jenny Byrne (first round)
Pilar Vásquez (qualifying competition)
