# 2018 Connecticut Open – Singles

Daria Gavrilova was the defending champion, but lost to Aryna Sabalenka in the second round.
Sabalenka went on to win her first WTA Tour title, defeating Carla Suárez Navarro in the final, 6–1, 6–4. Suárez Navarro reached the final despite playing only one completed match in the first four rounds.

## Seeds

The top two seeds received byes into the second round.
* Simona Halep (withdrew)
* Caroline Garcia (quarterfinals)
* Petra Kvitová (quarterfinals, retired)
* Karolína Plíšková (first round)
* Julia Görges (semifinals)
* Ashleigh Barty (withdrew)
* Kiki Bertens (withdrew)
* Barbora Strýcová (first round)
* Daria Gavrilova (second round)

## Draw
### Key

* Q = Qualifier
* WC = Wild card
* LL = Lucky loser
* Alt = Alternate
* SE = Special exempt
* PR = Protected ranking
* ITF = ITF entry
* JE = Junior exempt
* w/o = Walkover
* r = Retired
* d = Defaulted
* SR = Special ranking

### Finals

| Semifinals | Semifinals | Semifinals | Semifinals | Final | Final | Final |
| | Aryna Sabalenka | 6 | 7$^7$ | | | |
| 5 | Julia Görges | 4 | 6$^3$ | | | |
| 5 | Julia Görges | 4 | 6$^3$ | Aryna Sabalenka | 6 | 6 |
| | | | | Carla Suárez Navarro | 1 | 4 |
| | Carla Suárez Navarro | 4 | | Carla Suárez Navarro | 1 | 4 |
| Q | Monica Puig | 4$^r$ | | | | |

### Top half

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals |
| | | | | | LL | B Bencic | 6 | 6 | | | | | | | | | |
| Q | A Bogdan | 3 | 2 | | Q | C Giorgi | 4 | 4 | | | | | | | | | |
| Q | C Giorgi | 6 | 6 | | | | | | | LL | B Bencic | 3 | 2 | | | | |
| LL | S Stosur | 3 | 2 | | | | | | | | A Sabalenka | 6 | 6 | | | | |
| | A Sabalenka | 6 | 6 | | | A Sabalenka | 6 | 6$^6$ | 7 | | | | | | | | |
| | I-C Begu | 2 | 1 | | 9 | D Gavrilova | 3 | 7$^8$ | 5 | | | | | | | | |
| 9 | D Gavrilova | 6 | 6 | | | | | | | | | | | | A Sabalenka | 6 | 7$^7$ |
| 4/WC | Ka Plíšková | 1 | 3 | | | | | | | | | | | 5 | J Görges | 4 | 6$^3$ |
| | E Makarova | 6 | 6 | | | E Makarova | 2 | 6 | 6 | | | | | | | | |
| | M Rybáriková | 2 | 6 | 2 | | M Rybáriková | 6 | 3 | 3 | | | | | | | | |
| WC | C Vandeweghe | 6 | 4 | 3$^r$ | | | | | | | E Makarova | 4 | 2 | | | | |
| Q | D Yastremska | 6 | 6 | | | | | | | 5 | J Görges | 6 | 6 | | | | |
| WC | D Collins | 0 | 3 | | Q | D Yastremska | 4 | 6 | 4 | | | | | | | | |
| | D Cibulková | 3 | 1 | | 5 | J Görges | 6 | 3 | 6 | | | | | | | | |
| 5 | J Görges | 6 | 6 | | | | | | | | | | | | | | |

### Bottom half

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals |
| 8 | B Strýcová | 6$^6$ | 4 | | | | | | | | | | | | | | |
| | C Suárez Navarro | 7$^8$ | 6 | | | C Suárez Navarro | w/o | | | | | | | | | | |
| PR | L Siegemund | 2 | 5 | | | J Konta | | | | | | | | | | | |
| | J Konta | 6 | 7 | | | | | | | | C Suárez Navarro | 6 | 0 | | | | |
| | M Sakkari | 4 | 3 | | | | | | | 3 | P Kvitová | 3 | 0$^r$ | | | | |
| Q | Z Diyas | 6 | 6 | | Q | Z Diyas | 1 | 7 | 2 | | | | | | | | |
| | A Radwańska | 1 | 6$^3$ | | 3 | P Kvitová | 6 | 5 | 6 | | | | | | | | |
| 3 | P Kvitová | 6 | 7$^7$ | | | | | | | | | | | | | C Suárez Navarro | 4 |
| LL | P Parmentier | 6 | 2 | 2 | | | | | | | | | | | Q | M Puig | 4$^r$ |
| | A Kontaveit | 3 | 6 | 6 | | A Kontaveit | 4 | 3 | | | | | | | | | |
| Q | M Puig | 7 | 6 | | Q | M Puig | 6 | 6 | | | | | | | | | |
| PR | T Bacsinszky | 5 | 1 | | | | | | | Q | M Puig | 7 | 1 | 6 | | | |
| Q | A Sasnovich | 7$^8$ | 6$^3$ | 6 | | | | | | 2 | C Garcia | 5 | 6 | 2 | | | |
| | K Mladenovic | 6$^6$ | 7$^7$ | 2 | Q | A Sasnovich | 7$^7$ | 2 | 4 | | | | | | | | |
| | | | | | 2 | C Garcia | 6$^2$ | 6 | 6 | | | | | | | | |

## Qualifying
### Seeds

* Aliaksandra Sasnovich (qualified)
* Alison Van Uytvanck (first round)
* Camila Giorgi (qualified)
* Hsieh Su-wei (second round)
* Belinda Bencic (qualifying competition, lucky loser)
* Kirsten Flipkens (second round)
* Yulia Putintseva (first round)
* Petra Martić (first round, retired)
* Kateřina Siniaková (withdrew, still competing in Cincinnati)
* Viktória Kužmová (first round)
* Magda Linette (second round)
* Monica Niculescu (first round)

### Qualifiers

* Aliaksandra Sasnovich
* Ana Bogdan
* Camila Giorgi
* Monica Puig
* Dayana Yastremska
* Zarina Diyas

### Lucky losers

* Samantha Stosur
* Belinda Bencic
* Pauline Parmentier

### Draw
#### First qualifier

| First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 1 | Aliaksandra Sasnovich | 7$^8$ | 6 | | | | | | | | | |
| | Johanna Larsson | 6$^6$ | 3 | | | | | | | | | |
| | Johanna Larsson | 6$^6$ | 3 | 1 | Aliaksandra Sasnovich | 6 | 1 | 6 | | | | |
| | | | | | Kristýna Plíšková | 1 | 6 | 1 | | | | |
| | Kristýna Plíšková | 6 | 6 | | Kristýna Plíšková | 1 | 6 | 1 | | | | |
| WC | Maria Mateas | 1 | 2 | | | | | | | | | |
| WC | Maria Mateas | 1 | 2 | | | | | | 1 | Aliaksandra Sasnovich | 6 | 6 |
| | | | | | | | | | | Pauline Parmentier | 1 | 4 |
| | Pauline Parmentier | 7 | 6 | | | | | | | | | | Pauline Parmentier | 1 | 4 |
| | Evgeniya Rodina | 5 | 2 | | | | | | | | | |
| | Evgeniya Rodina | 5 | 2 | | Pauline Parmentier | 7 | 6 | | | | | |
| | | | | | Carina Witthöft | 5 | 2 | | | | | |
| | Carina Witthöft | 4 | 4 | | Carina Witthöft | 5 | 2 | | | | | |
| 8 | Petra Martić | 6 | 1$^r$ | | | | | | | | | |

#### Second qualifier

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Qualifying competition | Qualifying competition | Qualifying competition |
| 2 | Alison Van Uytvanck | 3 | 6 | 4 | | | | | | | |
| | Rebecca Peterson | 6 | 1 | 6 | | | | | | | |
| | Rebecca Peterson | 6 | 1 | 6 | Rebecca Peterson | 5 | 7 | 6 | | | |
| | | | | | Sofia Kenin | 7 | 5 | 3 | | | |
| | Sofia Kenin | 7$^7$ | 6 | | Sofia Kenin | 7 | 5 | 3 | | | |
| | Anna Karolína Schmiedlová | 6$^5$ | 4 | | | | | | | | |
| | Anna Karolína Schmiedlová | 6$^5$ | 4 | | | | | | Rebecca Peterson | 6$^2$ | 3 |
| | | | | | | | | | Ana Bogdan | 7$^7$ | 6 |
| WC | Caroline Dunleavy | 2 | 0 | | | | | | | | | Ana Bogdan | 7$^7$ | 6 |
| | Anna Blinkova | 6 | 6 | | | | | | | | |
| | Anna Blinkova | 6 | 6 | | Anna Blinkova | 3 | 0 | | | | |
| | | | | | Ana Bogdan | 6 | 6 | | | | |
| | Ana Bogdan | 6 | 6 | | Ana Bogdan | 6 | 6 | | | | |
| 10 | Viktória Kužmová | 2 | 2 | | | | | | | | |

#### Third qualifier

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 3 | Camila Giorgi | 1 | 6 | 6 | | | | | | | | |
| | Claire Liu | 6 | 3 | 2 | | | | | | | | |
| | Claire Liu | 6 | 3 | 2 | 3 | Camila Giorgi | w/o | | | | | |
| | | | | | Alt | Ellen Perez | | | | | | |
| Alt | Ellen Perez | 7$^7$ | 6 | | Alt | Ellen Perez | | | | | | |
| | Markéta Vondroušová | 6$^2$ | 4 | | | | | | | | | |
| | Markéta Vondroušová | 6$^2$ | 4 | | | | | | 3 | Camila Giorgi | 7 | 6 |
| | | | | | | | | | | Samantha Stosur | 5 | 3 |
| | Samantha Stosur | 6 | 6 | | | | | | | | | | Samantha Stosur | 5 | 3 |
| | Christina McHale | 3 | 2 | | | | | | | | | |
| | Christina McHale | 3 | 2 | | | Samantha Stosur | 6 | 0 | | | | |
| | | | | | | Stefanie Vögele | 3 | 0$^r$ | | | | |
| | Stefanie Vögele | 6 | 7 | | | Stefanie Vögele | 3 | 0$^r$ | | | | |
| Alt | Valeria Savinykh | 3 | 5 | | | | | | | | | |

#### Fourth qualifier

| First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 4 | Hsieh Su-wei | 6 | 6 | | | | | | | | | | |
| | Sara Sorribes Tormo | 4 | 2 | | | | | | | | | | |
| | Sara Sorribes Tormo | 4 | 2 | 4 | Hsieh Su-wei | 6 | 6$^8$ | 3 | | | | | |
| | | | | PR | Margarita Gasparyan | 4 | 7$^{10}$ | 6 | | | | | |
| PR | Margarita Gasparyan | 6 | 6 | PR | Margarita Gasparyan | 4 | 7$^{10}$ | 6 | | | | | |
| | Polona Hercog | 2 | 4 | | | | | | | | | | |
| | Polona Hercog | 2 | 4 | | | | | | PR | Margarita Gasparyan | 7 | 2 | 2 |
| | | | | | | | | | | Monica Puig | 5 | 6 | 6 |
| | Andrea Petkovic | 6 | 6 | | | | | | | | | | | Monica Puig | 5 | 6 | 6 |
| | Lara Arruabarrena | 1 | 2 | | | | | | | | | | |
| | Lara Arruabarrena | 1 | 2 | | Andrea Petkovic | 6$^4$ | 1$^r$ | | | | | | |
| | | | | | Monica Puig | 7$^7$ | 1 | | | | | | |
| | Monica Puig | 7$^7$ | 6 | | Monica Puig | 7$^7$ | 1 | | | | | | |
| 12 | Monica Niculescu | 6$^5$ | 3 | | | | | | | | | | |

#### Fifth qualifier

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 5 | Belinda Bencic | 2 | 6 | 6 | | | | | | | | | |
| | Kurumi Nara | 6 | 4 | 3 | | | | | | | | | |
| | Kurumi Nara | 6 | 4 | 3 | 5 | Belinda Bencic | 6$^5$ | 6 | 6 | | | | |
| | | | | | WC | Whitney Osuigwe | 7$^7$ | 2 | 2 | | | | |
| WC | Whitney Osuigwe | 6 | 6 | | WC | Whitney Osuigwe | 7$^7$ | 2 | 2 | | | | |
| WC | Asia Muhammad | 3 | 3 | | | | | | | | | | |
| WC | Asia Muhammad | 3 | 3 | | | | | | | 5 | Belinda Bencic | 6$^5$ | 6$^3$ |
| | | | | | | | | | | | Dayana Yastremska | 7$^7$ | 7$^7$ |
| | Dayana Yastremska | 6 | 1 | 6 | | | | | | | | | | Dayana Yastremska | 7$^7$ | 7$^7$ |
| WC | Bernarda Pera | 3 | 6 | 4 | | | | | | | | | |
| WC | Bernarda Pera | 3 | 6 | 4 | | Dayana Yastremska | 7$^7$ | 7$^7$ | | | | | |
| | | | | | 11 | Magda Linette | 6$^3$ | 6$^4$ | | | | | |
| | Sachia Vickery | 4 | 6 | 0 | 11 | Magda Linette | 6$^3$ | 6$^4$ | | | | | |
| 11 | Magda Linette | 6 | 3 | 6 | | | | | | | | | |

#### Sixth qualifier

| First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Qualifying competition | Qualifying competition | Qualifying competition |
| 6 | Kirsten Flipkens | 6 | 6 | | | | | | | | |
| WC | Emma Davis | 3 | 1 | | | | | | | | |
| WC | Emma Davis | 3 | 1 | 6 | Kirsten Flipkens | 3 | 2 | | | | |
| | | | | | Tamara Zidanšek | 6 | 6 | | | | |
| | Tamara Zidanšek | 7 | 7$^7$ | | Tamara Zidanšek | 6 | 6 | | | | |
| | Maria Sanchez | 5 | 6$^5$ | | | | | | | | |
| | Maria Sanchez | 5 | 6$^5$ | | | | | | Tamara Zidanšek | 1 | 4 |
| | | | | | | | | | Zarina Diyas | 6 | 6 |
| | Vera Lapko | 6 | 6 | | | | | | | | | Zarina Diyas | 6 | 6 |
| | Emina Bektas | 4 | 1 | | | | | | | | |
| | Emina Bektas | 4 | 1 | | Vera Lapko | 1 | 6 | 3 | | | |
| | | | | | Zarina Diyas | 6 | 3 | 6 | | | |
| | Zarina Diyas | 7 | 6 | | Zarina Diyas | 6 | 3 | 6 | | | |
| 7 | Yulia Putintseva | 5 | 1 | | | | | | | | |