# 2023 Championnats Banque Nationale de Granby – Women's singles

Kayla Day won the women's singles tournament at the 2023 Championnats Banque Nationale de Granby after defeating Katherine Sebov 6–4, 2–6, 7–5 in the final.
Daria Kasatkina was the defending champion but chose not to defend her title.

## Seeds

* Rebecca Marino (semifinals)
* Ashlyn Krueger (semifinals)
* Kayla Day (champion)
* Emina Bektas (quarterfinals, retired)
* Katherine Sebov (final)
* Himeno Sakatsume (quarterfinals)
* Katrina Scott (first round)
* Marcela Zacarías (first 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 | Semifinals | Final | Final | Final | Final | Final |
| 1 | Rebecca Marino | 6 | 4 | 2 | | | | | |
| 5 | Katherine Sebov | 4 | 6 | 6 | | | | | |
| 5 | Katherine Sebov | 4 | 6 | 6 | 5 | Katherine Sebov | 4 | 6 | 5 |
| | | | | | 3 | Kayla Day | 6 | 2 | 7 |
| 3 | Kayla Day | 6 | 4 | 6 | 3 | Kayla Day | 6 | 2 | 7 |
| 2 | Ashlyn Krueger | 3 | 6 | 1 | | | | | |

### Top Half

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 1 | R Marino | 7$^7$ | 6 | | | | | | | | | | | | | | |
| Q | R Verma | 6$^3$ | 1 | | 1 | R Marino | 6 | 6 | | | | | | | | | |
| Q | E Cayetano | 0 | 0 | | | J Failla | 2 | 0 | | | | | | | | | |
| | J Failla | 6 | 6 | | | | | | 1 | R Marino | 6 | 6 | | | | | |
| | M Stakusic | 6 | 6 | | | | | | | M Stakusic | 2 | 4 | | | | | |
| Q | A Akli | 4 | 0 | | | M Stakusic | 6 | 6 | | | | | | | | | |
| Q | A Markham | 6 | 2 | 6 | Q | A Markham | 2 | 0 | | | | | | | | | |
| 7 | K Scott | 3 | 6 | 1 | | | | | | | | | 1 | R Marino | 6 | 4 | 2 |
| 4 | E Bektas | 6 | 6 | | | | | | | | | | 5 | K Sebov | 4 | 6 | 6 |
| | V Hu | 3 | 3 | | 4 | E Bektas | 7$^7$ | 6 | | | | | | | | | |
| | M Jones | 7$^7$ | 0 | 6 | | M Jones | 6$^2$ | 4 | | | | | | | | | |
| WC | M Kupres | 6$^4$ | 6 | 3 | | | | | 4 | E Bektas | 2$^r$ | | | | | | |
| Q | C Corley | 4 | 5 | | | | | | 5 | K Sebov | 3 | | | | | | |
| WC | A Xu | 6 | 7 | | WC | A Xu | 3 | 6$^3$ | | | | | | | | | |
| Q | S Lý Nguyễn | 4 | 3 | | 5 | K Sebov | 6 | 7$^7$ | | | | | | | | | |
| 5 | K Sebov | 6 | 6 | | | | | | | | | | | | | | |

### Bottom Half

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 8 | M Zacarías | 1 | 3 | | | | | | | | | | | | | | |
| | C Brace | 6 | 6 | | | C Brace | 6 | 6 | | | | | | | | | |
| Q | AP Neffa de los Ríos | 3 | 2 | | Q | AP Neffa de los Ríos | 1 | 3 | | | | | | | | | |
| | S Fung | 6 | 1$^r$ | | | | | | | C Brace | 2 | 4 | | | | | |
| Q | J Daniel | 2 | 6 | 4 | | | | | 3 | K Day | 6 | 6 | | | | | |
| WC | B Fernandez | 6 | 4 | 6 | WC | B Fernandez | 3 | 3 | | | | | | | | | |
| | R Zarazúa | 4 | 4 | | 3 | K Day | 6 | 6 | | | | | | | | | |
| 3 | K Day | 6 | 6 | | | | | | | | | | 3 | K Day | 6 | 4 | 6 |
| 6 | H Sakatsume | 4 | 6 | 6 | | | | | | | | | 2 | A Krueger | 3 | 6 | 1 |
| WC | L Sleeth | 6 | 1 | 2 | 6 | H Sakatsume | 6 | 7$^7$ | | | | | | | | | |
| PR | J Brady | 6 | 6 | | PR | J Brady | 4 | 6$^2$ | | | | | | | | | |
| | K Okamura | 2 | 3 | | | | | | 6 | H Sakatsume | 4 | 4 | | | | | |
| | J Loeb | 5 | 1 | | | | | | 2 | A Krueger | 6 | 6 | | | | | |
| | V Mboko | 7 | 6 | | | V Mboko | 2 | 3 | | | | | | | | | |
| | K Cross | 3 | 4 | | 2 | A Krueger | 6 | 6 | | | | | | | | | |
| 2 | A Krueger | 6 | 6 | | | | | | | | | | | | | | |