The 2018 Coupe Banque Nationale is a women's tennis tournament played on indoor carpet courts. It was the 26th edition of the Tournoi de Québec and part of the WTA International tournaments of the 2018 WTA Tour. It took place at the PEPS de l'Université Laval in Quebec City, Canada, from September 10 through September 16, 2018. Eighth-seeded Pauline Parmentier won the singles title.
| 2018 Coupe Banque Nationale | |
|---|---|
| Date | September 10–16 |
| Edition | 26th |
| Category | WTA International |
| Draw | 32S (24Q) / 16D (0Q) |
| Prize money | US$250,000 |
| Surface | Carpet – indoors |
| Location | Quebec City, Canada |
| Venue | PEPS de l'Université Laval |
| Champions | |
| Singles | |
 Pauline Parmentier | |
| Doubles | |
 Asia Muhammad / Maria Sanchez | |
Finals
editSingles
edit Pauline Parmentier defeated Jessica Pegula 7–5, 6–2
- It was Parmentier's 2nd and last singles title of the year and the 4th and last of her career.
Doubles
edit Asia Muhammad / Maria Sanchez defeated 
Darija Jurak / 
Xenia Knoll 6–4, 6–3
Points and prize money
editPoint distribution
edit| Event | W | F | SF | QF | Round of 16 | Round of 32 | Q | Q2 | Q1 |
| Singles | 280 | 180 | 110 | 60 | 30 | 1 | 18 | 12 | 1 |
|---|---|---|---|---|---|---|---|---|---|
| Doubles | 1 | — | — | — | — |
Prize money
edit| Event | W | F | SF | QF | Round of 16 | Round of 32 | Q2 | Q1 | |
| Singles | $43,000 | $21,400 | $11,500 | $6,175 | $3,400 | $2,100 | $1,020 | $600 | |
| Doubles | $12,300 | $6,400 | $3,435 | $1,820 | $960 | — | — | — | |
| Doubles prize money per team | |||||||||
^* Qualifiers prize money is also the round of 32 prize money
Singles main draw entrants
editSeeds
edit| Country | Player | Rank1 | Seed |
|---|---|---|---|
 BLR
|
Aryna Sabalenka | 20 | 1 |
| CRO
|
Petra Martić | 47 | 2 |
 PUR
|
Monica Puig | 55 | 3 |
 ROU
|
Monica Niculescu | 62 | 4 |
| USA
|
Sofia Kenin | 65 | 5 |
 CZE
|
Lucie Šafářová | 69 | 6 |
 GER
|
Tatjana Maria | 70 | 7 |
| FRA
|
Pauline Parmentier | 71 | 8 |
- 1 Rankings are as of August 27, 2018
Other entrants
editThe following players received wildcards into the singles main draw:
The following player entered the singles main draw with a protected ranking:
The following players received entry from the qualifying draw:
Marie Bouzková
Gabriela Dabrowski
Victoria Duval
Sesil Karatantcheva- Tereza Martincová
- Jessica Pegula
Withdrawals
edit- Before the tournament
Anna Blinkova → replaced by Veronika Kudermetova- Danielle Collins → replaced by
Naomi Broady 
Olga Danilović → replaced by 
Ons Jabeur- Vitalia Diatchenko → replaced by Madison Brengle
- Margarita Gasparyan → replaced by
Beatriz Haddad Maia - Anastasia Pavlyuchenkova → replaced by Heather Watson
Peng Shuai → replaced by 
Mona Barthel- Sachia Vickery → replaced by
Georgina García Pérez
Doubles main draw entrants
editSeeds
edit| Country | Player | Country | Player | Rank1 | Seed |
|---|---|---|---|---|---|
| USA
|
Kaitlyn Christian | USA
|
Sabrina Santamaria | 108 | 1 |
| CRO
|
Darija Jurak | SUI
|
Xenia Knoll | 137 | 2 |
| USA
|
Desirae Krawczyk |  MEX
|
Giuliana Olmos | 151 | 3 |
 RUS
|
Natela Dzalamidze | RUS
|
Veronika Kudermetova | 183 | 4 |
- 1 Rankings are as of August 20, 2018
Other entrants
editThe following pairs received wildcards into the doubles main draw: