| Men's singles | |
|---|---|
| 2023 Championnats Banque Nationale de Granby | |
| Champion |  Alexis Galarneau |
| Runner-up |  Philip Sekulic |
| Score | 6–4, 3–6, 6–3 |
Gabriel Diallo was the defending champion [1] but chose not to defend his title.
Alexis Galarneau won the title after defeating Philip Sekulic 6–4, 3–6, 6–3 in the final.
Thanasi Kokkinakis (second round, retired)
Arthur Cazaux (second round)
Shang Juncheng (first round) Vasek Pospisil (first round)
Denis Kudla (second round)
Rio Noguchi (first round) Alexis Galarneau (champion) Giovanni Mpetshi Perricard (first round)| Semifinals | Final | ||||||||||||
| Q | James Trotter | 4 | 6 | 63 | |||||||||
| Q | Philip Sekulic | 6 | 2 | 77 | |||||||||
| Q | Philip Sekulic | 4 | 6 | 3 | |||||||||
| 7 | Alexis Galarneau | 6 | 3 | 6 | |||||||||
 Wu Tung-lin | 64 | 3 | |||||||||||
| 7 | Alexis Galarneau | 77 | 6 | ||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 1 | T Kokkinakis | 6 | 66 | 6 | |||||||||||||||||||||||
| Q | P Kypson | 2 | 78 | 4 | 1 | T Kokkinakis | 65 | 0r | |||||||||||||||||||
| Q | J Trotter | 6 | 77 | Q | J Trotter | 77 | 2 | ||||||||||||||||||||
| LL | Nathan Ponwith | 3 | 61 | Q | J Trotter | 710 | 6 | ||||||||||||||||||||
| J McCabe | 77 | 6 | J McCabe | 68 | 2 | ||||||||||||||||||||||
| T Sandgren | 64 | 3 | J McCabe | 6 | 6 | ||||||||||||||||||||||
| D Sweeny | 3 | 6 | 6 | D Sweeny | 4 | 2 | |||||||||||||||||||||
| 8 | G Mpetshi Perricard | 6 | 4 | 4 | Q | J Trotter | 4 | 6 | 63 | ||||||||||||||||||
| 3 | J Shang | 2 | 2 | Q | P Sekulic | 6 | 2 | 77 | |||||||||||||||||||
 M Lajal | 6 | 6 | M Lajal | 4 | 6 | 65 | |||||||||||||||||||||
| Q |  B Bicknell | 0 | 6 | 4 | WC | J Boulais | 6 | 1 | 77 | ||||||||||||||||||
| WC | Justin Boulais | 6 | 4 | 6 | WC | J Boulais | 3 | 2 | |||||||||||||||||||
| Q | P Sekulic | 66 | 77 | 6 | Q | P Sekulic | 6 | 6 | |||||||||||||||||||
| Y Uchiyama | 78 | 64 | 1 | Q | P Sekulic | 7 | 6 | ||||||||||||||||||||
| H Moriya | 4 | 7 | 2 | 5 | D Kudla | 5 | 3 | ||||||||||||||||||||
| 5 | D Kudla | 6 | 5 | 6 | |||||||||||||||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 6 | R Noguchi | 0 | 2 | ||||||||||||||||||||||||
| T-l Wu | 6 | 6 | T-l Wu | 6 | 6 | ||||||||||||||||||||||
| LL |  A Cozbinov | 1 | 3 | PR | C Harrison | 3 | 4 | ||||||||||||||||||||
| PR | C Harrison | 6 | 6 | T-l Wu | 6 | 6 | |||||||||||||||||||||
| M Janvier | 78 | 6 | M Janvier | 4 | 4 | ||||||||||||||||||||||
| J Jung | 66 | 3 | M Janvier | 6 | 4 | 77 | |||||||||||||||||||||
| A Walton | 67 | 77 | 6 | A Walton | 4 | 6 | 64 | ||||||||||||||||||||
| 4 | V Pospisil | 79 | 61 | 1 | T-l Wu | 64 | 3 | ||||||||||||||||||||
| 7 | A Galarneau | 6 | 3 | 6 | 7 | A Galarneau | 77 | 6 | |||||||||||||||||||
| O Jasika | 1 | 6 | 3 | 7 | A Galarneau | 6 | 78 | ||||||||||||||||||||
| Q | N Chappell | 5 | 3 | PR | T-S Kwiatkowski | 2 | 66 | ||||||||||||||||||||
| PR | T-S Kwiatkowski | 7 | 6 | 7 | A Galarneau | 6 | 6 | ||||||||||||||||||||
| Alt | T Schoolkate | 6 | 6 | Alt | T Schoolkate | 4 | 3 | ||||||||||||||||||||
| Q | Joshua Sheehy | 2 | 3 | Alt | T Schoolkate | 6 | 6 | ||||||||||||||||||||
 NH Lý | 1 | 67 | 2 | A Cazaux | 3 | 3 | |||||||||||||||||||||
| 2 | A Cazaux | 6 | 79 | ||||||||||||||||||||||||
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