# 2023 Koser Jewelers Tennis Challenge – Singles

Wang Xinyu won the title, defeating former three-time champion Madison Brengle in the final, 6–2, 6–3.
Zhu Lin was the defending champion, but chose to compete at the 2023 National Bank Open instead.

## Seeds

* Wang Xinyu (champion)
* Rebecca Peterson (first round)
* Caroline Dolehide (quarterfinals)
* Madison Brengle (final)
* Simona Waltert (first round)
* Olivia Gadecki (second round)
* Erika Andreeva (quarterfinals)
* Jang Su-jeong (semifinals)

## 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 |
| 1 | Wang Xinyu | 7 | 6$^6$ | 6 | | | | |
| WC | Makenna Jones | 5 | 7$^8$ | 0 | | | | |
| WC | Makenna Jones | 5 | 7$^8$ | 0 | 1 | Wang Xinyu | 6 | 6 |
| | | | | | 4 | Madison Brengle | 2 | 3 |
| 4 | Madison Brengle | 6 | 6 | | 4 | Madison Brengle | 2 | 3 |
| 8 | Jang Su-jeong | 3 | 4 | | | | | |

### Top half

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 1 | X Wang | 6 | 4 | 6 | | | | | | | | | | | | | | |
| | Y Starodubtseva | 4 | 6 | 4 | 1 | X Wang | 6 | 6 | | | | | | | | | | |
| WC | M Kessler | 3 | 6 | 6 | WC | M Kessler | 4 | 4 | | | | | | | | | | |
| | H Sakatsume | 6 | 4 | 2 | | | | | 1 | X Wang | 6 | 6$^2$ | 6 | | | | | |
| | J Loeb | 1 | 7 | 6 | | | | | 7 | E Andreeva | 1 | 7$^7$ | 2 | | | | | |
| | S Fung | 6 | 6 | 4 | | J Loeb | 4 | 3 | | | | | | | | | | |
| Q | R Anderson | 2 | 3 | | 7 | E Andreeva | 6 | 6 | | | | | | | | | | |
| 7 | E Andreeva | 6 | 6 | | | | | | | | | | | 1 | X Wang | 7 | 6$^6$ | 6 |
| 3 | C Dolehide | 6 | 1 | 6 | | | | | | | | | | WC | M Jones | 5 | 7$^8$ | 0 |
| | M Zacarías | 4 | 6 | 3 | 3 | C Dolehide | 6 | 6 | | | | | | | | | | |
| | I Shymanovich | 1 | 6 | 3 | | E Jacquemot | 4 | 4 | | | | | | | | | | |
| | E Jacquemot | 6 | 4 | 6 | | | | | 3 | C Dolehide | 6$^6$ | 6 | 4 | | | | | |
| WC | M Jones | 3 | 7 | 6 | | | | | WC | M Jones | 7$^8$ | 4 | 6 | | | | | |
| | A Sharma | 6 | 5 | 3 | WC | M Jones | 6 | 6 | | | | | | | | | | |
| Q | S Yamalapalli | 6 | 4 | 5 | 6 | O Gadecki | 4 | 2 | | | | | | | | | | |
| 6 | O Gadecki | 3 | 6 | 7 | | | | | | | | | | | | | | |

### 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 |
| 5 | S Waltert | 3 | 3 | | | | | | | | | | | | | |
| WC | M Stoiana | 6 | 6 | | WC | M Stoiana | 7 | 6 | | | | | | | | |
| WC | S Chang | 6 | 6$^5$ | 2 | Q | M Sieg | 5 | 3 | | | | | | | | |
| Q | M Sieg | 3 | 7$^7$ | 6 | | | | | WC | M Stoiana | 0 | 1 | | | | |
| Q | H Poznikhirenko | 6 | 7$^7$ | | | | | | 4 | M Brengle | 6 | 6 | | | | |
| | M Uchijima | 3 | 6$^5$ | | Q | H Poznikhirenko | 5 | 1 | | | | | | | | |
| Q | V Miroshnichenko | 6 | 3 | 0 | 4 | M Brengle | 7 | 6 | | | | | | | | |
| 4 | M Brengle | 1 | 6 | 6 | | | | | | | | | 4 | M Brengle | 6 | 6 |
| 8 | S-j Jang | 6 | 6 | | | | | | | | | | 8 | S-j Jang | 3 | 4 |
| Q | A Smith | 3 | 0 | | 8 | S-j Jang | 6 | 6 | | | | | | | | |
| Q | N Berberović | 3 | 4 | | Q | A Kiick | 4 | 3 | | | | | | | | |
| Q | A Kiick | 6 | 6 | | | | | | 8 | S-j Jang | 6 | 6 | | | | |
| | Y Wang | 6$^4$ | 3 | | | | | | SE | R Zarazúa | 2 | 1 | | | | |
| SE | R Zarazúa | 7$^7$ | 6 | | SE | R Zarazúa | 6 | 6 | | | | | | | | |
| | M Hontama | 6 | 6 | | | M Hontama | 2 | 1 | | | | | | | | |
| 2 | R Peterson | 1 | 2 | | | | | | | | | | | | | |