| Singles | |
|---|---|
| 2018 Hong Kong Tennis Open | |
| Champion |  Dayana Yastremska |
| Runner-up |  Wang Qiang |
| Score | 6–2, 6–1 |
| Draw | 32 |
| Seeds | 8 |
Anastasia Pavlyuchenkova was the defending champion, but chose to compete in Linz instead.
Dayana Yastremska won her first WTA Tour title, defeating Wang Qiang in the final, 6–2, 6–1.
Elina Svitolina (quarterfinals)
Naomi Osaka (withdrew)
Jeļena Ostapenko (first round)
Garbiñe Muguruza (semifinals) Lesia Tsurenko (withdrew) Wang Qiang (final)
Daria Gavrilova (quarterfinals)
Alizé Cornet (second round)| Semifinals | Final | ||||||||||||
| 6 | Wang Qiang | 65 | 6 | 7 | |||||||||
| 4 | Garbiñe Muguruza | 77 | 4 | 5 | |||||||||
| 6 | Wang Qiang | 2 | 1 | ||||||||||
| Dayana Yastremska | 6 | 6 | |||||||||||
| Dayana Yastremska | 7 | 6 | |||||||||||
| Zhang Shuai | 5 | 4 | |||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 1 | E Svitolina | 6 | 6 | ||||||||||||||||||||||||
| WC | P Hon | 2 | 3 | 1 | E Svitolina | 6 | 6 | ||||||||||||||||||||
| S Stosur | 3 | 3 | Q | N Hibino | 0 | 3 | |||||||||||||||||||||
| Q | N Hibino | 6 | 6 | 1 | E Svitolina | 2 | 4 | ||||||||||||||||||||
 C McHale | 62 | 6 | 6 | 6 | Q Wang | 6 | 6 | ||||||||||||||||||||
| WC |  E Chong | 77 | 2 | 1 | C McHale | 5 | 1 | ||||||||||||||||||||
| WC | L Zhang | 0 | 2 | 6 | Q Wang | 7 | 6 | ||||||||||||||||||||
| 6 | Q Wang | 6 | 6 | 6 | Q Wang | 65 | 6 | 7 | |||||||||||||||||||
| 4 | G Muguruza | 6 | 6 | 4 | G Muguruza | 77 | 4 | 5 | |||||||||||||||||||
| S Sorribes Tormo | 3 | 1 | 4 | G Muguruza | 6 | 6 | |||||||||||||||||||||
| LL | C Dolehide | 77 | 3 | 5 |  A Bogdan | 2 | 1 | ||||||||||||||||||||
| A Bogdan | 62 | 6 | 7 | 4 | G Muguruza | 6 | 7 | ||||||||||||||||||||
| J Brady | 1 | 65 |  L Kumkhum | 2 | 5 | ||||||||||||||||||||||
| L Kumkhum | 6 | 77 | L Kumkhum | 6 | 4 | 77 | |||||||||||||||||||||
| LL |  J Glushko | 1 | 2 | 8 | A Cornet | 4 | 6 | 65 | |||||||||||||||||||
| 8 | A Cornet | 6 | 6 | ||||||||||||||||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
 A Krunić | 1 | 3 | |||||||||||||||||||||||||
| S Zheng | 6 | 6 | S Zheng | 3 | 3 | ||||||||||||||||||||||
| D Yastremska | 6 | 6 | D Yastremska | 6 | 6 | ||||||||||||||||||||||
| Q |  F Stollár | 4 | 4 | D Yastremska | 78 | 6 | |||||||||||||||||||||
| LL |  V Tomova | 6 | 2 | 77 | PR |  K Kučová | 66 | 2 | |||||||||||||||||||
 D Jakupović | 3 | 6 | 63 | LL | V Tomova | 1 | 0 | ||||||||||||||||||||
| PR | K Kučová | 5 | 6 | 6 | PR | K Kučová | 6 | 6 | |||||||||||||||||||
| 3 | J Ostapenko | 7 | 3 | 2 | D Yastremska | 7 | 6 | ||||||||||||||||||||
| 7 | D Gavrilova | 3 | 7 | 6 | S Zhang | 5 | 4 | ||||||||||||||||||||
 Z Diyas | 6 | 5 | 1 | 7 | D Gavrilova | 6 | 4 | 77 | |||||||||||||||||||
| M Niculescu | 4 | 77 | 6 | M Niculescu | 3 | 6 | 63 | ||||||||||||||||||||
| Q |  O Jabeur | 6 | 60 | 4 | 7 | D Gavrilova | 1 | 3 | |||||||||||||||||||
| Q |  B Schoofs | 4 | 0 | S Zhang | 6 | 6 | |||||||||||||||||||||
| Q | L Kerkhove | 6 | 6 | Q | L Kerkhove | 1 | 77 | 1 | |||||||||||||||||||
| Q |  S Sharipova | 3 | 63 | S Zhang | 6 | 64 | 6 | ||||||||||||||||||||
| S Zhang | 6 | 77 | |||||||||||||||||||||||||
Heather Watson (first round) Ons Jabeur (qualified) Julia Glushko (qualifying competition, lucky loser) Nao Hibino (qualified) Fanny Stollár (qualified) Caroline Dolehide (qualifying competition, lucky loser) Sabina Sharipova (qualified) Claire Liu (first round)
Laura Siegemund (qualifying competition) Viktoriya Tomova (qualifying competition, lucky loser)
Tereza Mrdeža (first round) Bibiane Schoofs (qualified)| First round | Qualifying competition | ||||||||||||
| 1 | Heather Watson | 3 | 6 | 3 | |||||||||
| Lu Jiajing | 6 | 3 | 6 | ||||||||||
| Lu Jiajing | 3 | 1 | |||||||||||
| 7 | Sabina Sharipova | 6 | 6 | ||||||||||
 Marina Melnikova | 3 | 4 | |||||||||||
| 7 | Sabina Sharipova | 6 | 6 | ||||||||||
| First round | Qualifying competition | ||||||||||||
| 2 | Ons Jabeur | 6 | 6 | ||||||||||
| Lizette Cabrera | 4 | 4 | |||||||||||
| 2 | Ons Jabeur | 6 | 6 | ||||||||||
| 10 | Viktoriya Tomova | 2 | 1 | ||||||||||
| Mayo Hibi | 2 | 4 | |||||||||||
| 10 | Viktoriya Tomova | 6 | 6 | ||||||||||
| First round | Qualifying competition | ||||||||||||
| 3 | Julia Glushko | 6 | 6 | ||||||||||
| WC | Wong Hong Yi Cody | 3 | 1 | ||||||||||
| 3 | Julia Glushko | 4 | 4 | ||||||||||
| 12 | Bibiane Schoofs | 6 | 6 | ||||||||||
| WC | Maggie Ng | 1 | 2 | ||||||||||
| 12 | Bibiane Schoofs | 6 | 6 | ||||||||||
| First round | Qualifying competition | ||||||||||||
| 4 | Nao Hibino | 6 | 6 | ||||||||||
| Ayano Shimizu | 4 | 1 | |||||||||||
| 4 | Nao Hibino | 6 | 6 | ||||||||||
 Carol Zhao | 0 | 0 | |||||||||||
| Carol Zhao | 6 | 2 | 6 | ||||||||||
| 11 | Tereza Mrdeža | 2 | 6 | 1 | |||||||||
| First round | Qualifying competition | ||||||||||||
| 5 | Fanny Stollár | 6 | 6 | ||||||||||
| WC | Ng Kwan-yau | 0 | 2 | ||||||||||
| 5 | Fanny Stollár | 6 | 6 | ||||||||||
| 9 | Laura Siegemund | 0 | 3 | ||||||||||
| Peangtarn Plipuech | 4 | 4 | |||||||||||
| 9 | Laura Siegemund | 6 | 6 | ||||||||||
| First round | Qualifying competition | ||||||||||||
| 6 | Caroline Dolehide | 6 | 6 | ||||||||||
| WC | Wu Ho-ching | 2 | 4 | ||||||||||
| 6 | Caroline Dolehide | 60 | 6 | 3 | |||||||||
| Lesley Kerkhove | 77 | 4 | 6 | ||||||||||
| Lesley Kerkhove | 6 | 63 | 7 | ||||||||||
| 8 | Claire Liu | 0 | 77 | 5 | |||||||||
Monica Niculescu was the defending champion, but she lost in the quarterfinals to Yanina Wickmayer.
Kristýna Plíšková won the title, defeating defending champion Nao Hibino in the final, 6–3, 2–6, 6–3.
Elina Svitolina was the defending champion but withdrew before her second round match.
Sloane Stephens was the defending champion, but did not participate this year as she was recovering from foot surgery.
Océane Dodin was the defending champion, but withdrew from her second round match due to dizziness.
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The 2018 Hong Kong Tennis Open was a professional tennis tournament played on hard courts. It was the ninth edition of the tournament, and part of the 2018 WTA Tour. It took place in Victoria Park, Hong Kong, from October 8 to 14.
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