The 1999 Evert Cup singles was the singles event of the eleventh edition of the tennis tournament played at Indian Wells, California, United States. It is the second WTA Tier I tournament of the year, and part of the US Spring tennis season. The event was won by American player Serena Williams. World No. 1 Martina Hingis was the defending champion but Hingis lost in the quarterfinals to Chanda Rubin.
The 1999 Italian Open singles was the singles event of the fifty-fifth edition of the tennis tournament played at Rome, Italy, the most prestigious tennis tournament in Southern Europe. It was the fifth WTA Tier I tournament of the year, and part of the European claycourt season. Martina Hingis was the defending champion but lost in the semifinals to Venus Williams.
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 defending 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.
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.
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 won her second title at the Qatar Open, defeating Garbiñe Muguruza in the singles final, 6–2, 6–1, in a rematch of the 2018 final. 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 Świątek's first WTA 1000 singles title, and the 13 points Świątek lost in the championship match is the fewest on record in a WTA 1000 final; Serena Williams previously held the record, from the 2015 Miami Open final. This was the first WTA 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 history. With the win, Świątek broke into the top 10 of the WTA rankings for the first time.
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)
