| Singles | |
|---|---|
| 2021 Engie Open Andrézieux-Bouthéon 42 | |
| Champion |  Harmony Tan |
| Runner-up |  Jaqueline Cristian |
| Final score | 3–6, 6–2, 6–1 |
Ysaline Bonaventure was the defending champion, but chose not to participate. [1]
Harmony Tan won the title, defeating Jaqueline Cristian in the final, 3–6, 6–2, 6–1.
Océane Dodin (Second round)
Anna-Lena Friedsam (Quarterfinals)
Stefanie Vögele (Second round)
Katarina Zavatska (Quarterfinals)
Tereza Martincová (Second round) Tamara Korpatsch (First round)
Viktoriya Tomova (Second round)
Clara Tauson (Second round)| Semifinals | Final | ||||||||||||
| Q |  Urszula Radwańska | 3 | 1 | ||||||||||
| Jaqueline Cristian | 6 | 6 | |||||||||||
| Jaqueline Cristian | 6 | 2 | 1 | ||||||||||
| WC | Harmony Tan | 3 | 6 | 6 | |||||||||
| WC | Harmony Tan | 6 | 6 | ||||||||||
| Q |  Kathinka von Deichmann | 1 | 0 | ||||||||||
| First Round | Second Round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 1 | O Dodin | 6 | 6 | ||||||||||||||||||||||||
| Q | S Bandecchi | 3 | 3 | 1 | O Dodin | 3 | 4 | ||||||||||||||||||||
 L Pattinama Kerkhove | 63 | 6 | 4 | Q | U Radwańska | 6 | 6 | ||||||||||||||||||||
| Q | U Radwańska | 77 | 2 | 6 | Q | U Radwańska | 6 | 6 | |||||||||||||||||||
| Q | S Djoubri | 3 | 1 | L Küng | 4 | 1 | |||||||||||||||||||||
 C Bucșa | 6 | 6 | C Bucșa | 1 | 4 | ||||||||||||||||||||||
| L Küng | 6 | 7 | L Küng | 6 | 6 | ||||||||||||||||||||||
| 6 | T Korpatsch | 2 | 5 | Q | U Radwańska | 3 | 1 | ||||||||||||||||||||
| 3 | S Vögele | 6 | 5 | 6 | J Cristian | 6 | 6 | ||||||||||||||||||||
| Q |  D Marcinkēviča | 4 | 7 | 2 | 3 | S Vögele | 66 | 2 | |||||||||||||||||||
| LI Paar | 6 | 6 | LI Paar | 78 | 6 | ||||||||||||||||||||||
 Ç Büyükakçay | 3 | 4 | LI Paar | 6 | 2 | 1 | |||||||||||||||||||||
| J Cristian | 5 | 6 | 6 | J Cristian | 1 | 6 | 6 | ||||||||||||||||||||
| WC | D Parry | 7 | 4 | 2 | J Cristian | 2 | 77 | 6 | |||||||||||||||||||
| WC | E Jacquemot | 4 | 60 | 8 | C Tauson | 6 | 64 | 3 | |||||||||||||||||||
| 8 | C Tauson | 6 | 77 | ||||||||||||||||||||||||
| First Round | Second Round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 5 | T Martincová | 5 | 6 | 6 | |||||||||||||||||||||||
| Q |  F Di Sarra | 7 | 4 | 0 | 5 | T Martincová | 4 | 67 | |||||||||||||||||||
| Q | G Desperrier | 3 | 1 | WC | H Tan | 6 | 79 | ||||||||||||||||||||
| WC | H Tan | 6 | 6 | WC | H Tan | 6 | 6 | ||||||||||||||||||||
| PR |  Jia Lu | 65 | 4 | 4 | K Zavatska | 0 | 1 | ||||||||||||||||||||
| JE |  V Jiménez Kasintseva | 77 | 6 | JE | V Jiménez Kasintseva | 1 | 6 | 2 | |||||||||||||||||||
| G Gatto-Monticone | 4 | 1 | 4 | K Zavatska | 6 | 3 | 6 | ||||||||||||||||||||
| 4 | K Zavatska | 6 | 6 | WC | H Tan | 6 | 6 | ||||||||||||||||||||
| 7 | V Tomova | 6 | 6 | Q | K von Deichmann | 1 | 0 | ||||||||||||||||||||
| WC | A Hesse | 3 | 2 | 7 | V Tomova | 0 | 4 | ||||||||||||||||||||
| Q | K von Deichmann | 6 | 6 | Q | K von Deichmann | 6 | 6 | ||||||||||||||||||||
| X You | 4 | 4 | Q | K von Deichmann | 7 | 6 | |||||||||||||||||||||
| M Di Giuseppe | 4 | 4 | 2 | A-L Friedsam | 5 | 4 | |||||||||||||||||||||
| Q |  R Šramková | 6 | 6 | Q | R Šramková | 3 | 1 | ||||||||||||||||||||
| I de Vroome | 3 | 7 | 2 | 2 | A-L Friedsam | 6 | 6 | ||||||||||||||||||||
| 2 | A-L Friedsam | 6 | 5 | 6 | |||||||||||||||||||||||
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Thomas Muster was the defending champion and won in the final 6–2, 6–4, 3–6, 6–3 against Richard Krajicek.
Andriy Medvedev was the defending champion but lost in the second round to Jordi Burillo.
Andre Agassi was the defending champion but did not compete that year.
Steffi Graf was the defending champion but did not compete that year.
Meredith McGrath was the defending champion, but did not participate this year.
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The 1999 ANZ Tasmanian International – Singles was the singles event of the sixth edition of the ANZ Tasmanian International. Patty Schnyder was the defending champion but did not compete that year.
The 1999 Sydney International – Women's Singles was the singles event of the fourteenth edition of the ASB Classic; a WTA Tier II tournament and the second most prestigious women's tennis tournament held in Australia. Arantxa Sánchez Vicario was the defending champion but lost in the quarterfinals to Barbara Schett.
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The 1999 Open Gaz de France – Singles was the singles event of the seventh edition of the Open GDF Suez; a WTA Tier II tournament held in Paris, France. Mary Pierce was the defending champion but did not compete that year.
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. World No. 1 Martina Hingis was the defending champion but lost in the quarterfinals to Chanda Rubin.
The 1999 Evert Cup – Doubles was the doubles event of the eleventh edition of the tennis tournament played at Indian Wells, California, United States. It was the second WTA Tier I tournament of the year, and part of the US Spring tennis season. Lindsay Davenport and Natasha Zvereva were the defending champions but lost in the quarterfinals to Serena Williams and Venus Williams.
The 1999 Bausch & Lomb Championships – Singles was the singles event of the twentieth edition of the Bausch & Lomb Championships; a WTA Tier II tournament held in Amelia Island, Florida, United States, played on green clay. Mary Pierce was the defending champion but lost in the quarterfinals to Conchita Martínez.
The 1999 Estoril Open – Women's Singles was the singles event of the first edition of the WTA Tour Estoril Open; a WTA Tier IV tournament and the most prestigious women's tennis tournament held in Portugal. This tournament was part of the ITF Circuit last year, and it was won by Barbara Schwartz. Schwartz was eliminated in the second round of this year's event.
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Wayne Ferreira was the defending champion but lost in the quarterfinals to Tim Henman.
Andrey Golubev was the defending champion, but lost to Philipp Kohlschreiber in the first round.
The 1999 Swisscom Challenge – Singles was the singles event of the sixteenth edition of the Swisscom Challenge; a WTA Tier I tournament and the most prestigious tournament held in Switzerland. Lindsay Davenport was the two-time defending champion, but she did not compete this year.
Agnieszka Radwańska was the defending champion, but lost 6–0, 6–3 in the semifinals to the eventual champion Serena Williams.