# 2023 Kurume U.S.E Cup – Singles

Rebecca Marino was the defending champion but chose not to participate.
Emina Bektas won the title, defeating Ma Yexin in the final, 7–5, 5–7, 6–1.

## Seeds

* Emina Bektas (champion)
* Lina Glushko (second round)
* Haruka Kaji (semifinals)
* Lizette Cabrera (semifinals)
* Liang En-shuo (quarterfinals)
* Rina Saigo (second round, retired)
* Momoko Kobori (first round)
* Wang Yafan (quarterfinals)

## 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 | Emina Bektas | 6 | 6 | | | | | | |
| 3 | Haruka Kaji | 3 | 4 | | | | | | |
| 3 | Haruka Kaji | 3 | 4 | | 1 | Emina Bektas | 7 | 5 | 6 |
| | | | | | | Ma Yexin | 5 | 7 | 1 |
| 4 | Lizette Cabrera | 1 | 7$^7$ | 4 | | Ma Yexin | 5 | 7 | 1 |
| | Ma Yexin | 6 | 6$^5$ | 6 | | | | | |

### 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 |
| 1 | E Bektas | 6 | 6 | | | | | | | | | | | | | | |
| Q | R Ueda | 3 | 1 | | 1 | E Bektas | 6 | 6 | | | | | | | | | |
| Q | Ma Mushika | 6 | 0 | 6 | Q | Ma Mushika | 2 | 2 | | | | | | | | | |
| Q | R Matsuda | 4 | 6 | 3 | | | | | 1 | E Bektas | 4 | 6 | 7$^7$ | | | | |
| | A Parnaby | 6 | 7 | | | | | | 5 | E-s Liang | 6 | 2 | 6$^2$ | | | | |
| Q | J Namigata | 2 | 5 | | | A Parnaby | 3 | 2 | | | | | | | | | |
| | J Svendsen | 3 | 0 | | 5 | E-s Liang | 6 | 6 | | | | | | | | | |
| 5 | E-s Liang | 6 | 6 | | | | | | | | | | | 1 | E Bektas | 6 | 6 |
| 3 | H Kaji | 6 | 6 | | | | | | | | | | | 3 | H Kaji | 3 | 4 |
| WC | H Sato | 1 | 2 | | 3 | H Kaji | 7$^9$ | 6 | | | | | | | | | |
| | T Gibson | 4 | 6 | 1 | Q | S Akita | 6$^7$ | 0 | | | | | | | | | |
| Q | S Akita | 6 | 1 | 6 | | | | | 3 | H Kaji | 6 | 6 | | | | | |
| SR | A Shimizu | 6 | 6 | | | | | | SR | A Shimizu | 2 | 4 | | | | | |
| | E Sema | 3 | 0 | | SR | A Shimizu | 6 | 6 | | | | | | | | | |
| WC | M Kuramochi | 6 | 3 | 6 | WC | M Kuramochi | 1 | 0 | | | | | | | | | |
| 7 | M Kobori | 3 | 6 | 4 | | | | | | | | | | | | | |

### 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 | Semifinals |
| 8 | Y Wang | 6 | 7 | | | | | | | | | | | | | | | | |
| Q | M Yamaguchi | 1 | 5 | | 8 | Y Wang | 6 | 6 | | | | | | | | | | | |
| SE | N Kawaguchi | 3 | 4 | | | E Shimizu | 2 | 0 | | | | | | | | | | | |
| | E Shimizu | 6 | 6 | | | | | | | 8 | Y Wang | 5 | 6 | 4 | | | | | |
| | N Hanatani | 6$^4$ | 2 | | | | | | | 4 | L Cabrera | 7 | 4 | 6 | | | | | |
| | S Imamura | 7$^7$ | 6 | | | S Imamura | 3 | 3 | | | | | | | | | | | |
| Q | A Ito | 3 | 6 | 4 | 4 | L Cabrera | 6 | 6 | | | | | | | | | | | |
| 4 | L Cabrera | 6 | 4 | 6 | | | | | | | | | | | 4 | L Cabrera | 1 | 7$^7$ | 4 |
| 6 | R Saigo | 6 | 6 | | | | | | | | | | | | | Y Ma | 6 | 6$^5$ | 6 |
| Q | L-M Rioux | 1 | 1 | | 6 | R Saigo | 3 | 1$^r$ | | | | | | | | | | | |
| | Y Ma | 6 | 6 | | | Y Ma | 6 | 4 | | | | | | | | | | | |
| | M Ozeki | 1 | 3 | | | | | | | | Y Ma | 6 | 6 | | | | | | |
| WC | A Yamaguchi | 5 | 0 | | | | | | | | O Lincer | 4 | 0 | | | | | | |
| | O Lincer | 7 | 6 | | | O Lincer | 4 | 7$^7$ | 6 | | | | | | | | | | |
| WC | H Kobayashi | 4 | 1 | | 2 | L Glushko | 6 | 6$^4$ | 4 | | | | | | | | | | |
| 2 | L Glushko | 6 | 6 | | | | | | | | | | | | | | | | |