# 2023 Winnipeg National Bank Challenger – Singles

Emilio Gómez was the defending champion but chose not to defend his title.
Ryan Peniston won the title after defeating Leandro Riedi 6–4, 4–6, 6–4 in the final.

## Seeds

* Jack Draper (quarterfinals)
* David Goffin (first round)
* Benjamin Bonzi (second round)
* Liam Broady (semifinals)
* Luca Nardi (second round)
* Arthur Cazaux (semifinals)
* Dominic Stricker (first round)
* Gabriel Diallo (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 | Semifinals | Final | Final | Final | Final | Final |
| 6 | Arthur Cazaux | 3 | 6 | 5 | | | | | |
| Alt | Ryan Peniston | 6 | 2 | 7 | | | | | |
| Alt | Ryan Peniston | 6 | 2 | 7 | Alt | Ryan Peniston | 6 | 4 | 6 |
| | | | | | | Leandro Riedi | 4 | 6 | 4 |
| 4 | Liam Broady | 2 | 3 | | | Leandro Riedi | 4 | 6 | 4 |
| | Leandro Riedi | 6 | 6 | | | | | | |

### Top half

| 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 | J Draper | 6 | 6 | | | | | | | | | | | | | |
| | R Noguchi | 2 | 2 | 1 | J Draper | 6 | 7$^7$ | | | | | | | | | |
| PR | T-S Kwiatkowski | 6 | 6 | PR | T-S Kwiatkowski | 4 | 6$^4$ | | | | | | | | | |
| | C Rodesch | 0 | 2 | | | | | 1 | J Draper | 3 | 3 | | | | | |
| | A Martin | 6$^3$ | 6$^{10}$ | | | | | 6 | A Cazaux | 6 | 6 | | | | | |
| Q | U Blanch | 7$^7$ | 7$^{12}$ | Q | U Blanch | 3 | 5 | | | | | | | | | |
| Q | K Pannu | 3 | 1 | 6 | A Cazaux | 6 | 7 | | | | | | | | | |
| 6 | A Cazaux | 6 | 6 | | | | | | | | | 6 | A Cazaux | 3 | 6 | 5 |
| 3 | B Bonzi | 6 | 6 | | | | | | | | | Alt | R Peniston | 6 | 2 | 7 |
| | Y Shimizu | 2 | 4 | 3 | B Bonzi | 3 | 1 | | | | | | | | | |
| Q | D King | 6 | 6 | Q | D King | 6 | 6 | | | | | | | | | |
| WC | B Schnur | 2 | 1 | | | | | Q | D King | 0 | 1 | | | | | |
| WC | Taha Baadi | 0 | 2 | | | | | Alt | R Peniston | 6 | 6 | | | | | |
| Alt | R Peniston | 6 | 6 | Alt | R Peniston | 6 | 6 | | | | | | | | | |
| Alt | C Harrison | 7 | 6 | Alt | C Harrison | 0 | 2 | | | | | | | | | |
| 7 | D Stricker | 5 | 1 | | | | | | | | | | | | | |

### 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 | Semifinals |
| 5 | L Nardi | 6 | 6 | | | | | | | | | | | | | | | |
| Q | A Mayo | 4 | 2 | | 5 | L Nardi | 4 | 7 | 5 | | | | | | | | | |
| WC | Dan Martin | 4 | 4 | | Alt | B Harris | 6 | 5 | 7 | | | | | | | | | |
| Alt | B Harris | 6 | 6 | | | | | | | Alt | B Harris | 6$^5$ | 4 | | | | | |
| | Y-h Hsu | 6 | 6 | | | | | | | 4 | L Broady | 7$^7$ | 6 | | | | | |
| | S Mochizuki | 3 | 3 | | | Y-h Hsu | 6 | 1 | 1 | | | | | | | | | |
| Q | S Kirchheimer | 3 | 3 | | 4 | L Broady | 1 | 6 | 6 | | | | | | | | | |
| 4 | L Broady | 6 | 6 | | | | | | | | | | | | 4 | L Broady | 2 | 3 |
| 8 | G Diallo | 4 | 6 | 7$^8$ | | | | | | | | | | | | L Riedi | 6 | 6 |
| | E Couacaud | 6 | 2 | 6$^6$ | 8 | G Diallo | 2 | 3 | | | | | | | | | | |
| | A Galarneau | 6$^{10}$ | 7$^{10}$ | 3 | | M Bellucci | 6 | 6 | | | | | | | | | | |
| | M Bellucci | 7$^{12}$ | 6$^8$ | 6 | | | | | | | M Bellucci | 3 | 6 | 3 | | | | |
| | H Mayot | 6 | 2 | 6 | | | | | | | L Riedi | 6 | 3 | 6 | | | | |
| Q | O Kumar | 1 | 6 | 4 | | H Mayot | | | | | | | | | | | | |
| | L Riedi | 6 | 2 | 6 | | L Riedi | w/o | | | | | | | | | | | |
| 2 | D Goffin | 3 | 6 | 2 | | | | | | | | | | | | | | |