# 2015 Stockton Challenger – Singles

This was a new event to the ITF Women's Circuit in 2015.
Nao Hibino won the title, defeating An-Sophie Mestach in the final, 6–1, 7–6$^{(8–6)}$.

## Seeds

* An-Sophie Mestach (final)
* Eri Hozumi (first round)
* Maria Sanchez (first round)
* Catherine Bellis (first round)
* Nao Hibino (champion)
* Julia Boserup (first round)
* Mayo Hibi (quarterfinals)
* Naomi Broady (second round)

## Main 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 | An-Sophie Mestach | 6 | 5 | 6 | | | | |
| | Kimiko Date-Krumm | 2 | 7 | 2 | | | | |
| | Kimiko Date-Krumm | 2 | 7 | 2 | 1 | An-Sophie Mestach | 1 | 6$^6$ |
| | | | | | 5 | Nao Hibino | 6 | 7$^8$ |
| 5 | Nao Hibino | 7$^7$ | 7$^7$ | | 5 | Nao Hibino | 6 | 7$^8$ |
| | Sanaz Marand | 6$^5$ | 6$^4$ | | | | | |

### Top half

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 1 | A-S Mestach | 6 | 7$^{10}$ | | | | | | | | | | | | | | |
| WC | A Stevenson | 3 | 6$^8$ | | 1 | A-S Mestach | 7$^7$ | 6 | | | | | | | | | |
| | A Kalinina | 6 | 6 | | | A Kalinina | 6$^3$ | 2 | | | | | | | | | |
| | C de Bernardi | 4 | 4 | | | | | | 1 | A-S Mestach | 7 | 7 | | | | | |
| Q | S Sanders | 6 | 1 | 6 | | | | | 7 | M Hibi | 5 | 5 | | | | | |
| | A Kiick | 1 | 6 | 0 | Q | S Sanders | 5 | 3 | | | | | | | | | |
| | S Crawford | 6$^5$ | 0 | | 7 | M Hibi | 7 | 6 | | | | | | | | | |
| 7 | M Hibi | 7$^7$ | 6 | | | | | | | | | | 1 | A-S Mestach | 6 | 5 | 6 |
| 4 | C Bellis | 4 | 1 | | | | | | | | | | | K Date-Krumm | 2 | 7 | 2 |
| | J Jakšić | 6 | 6 | | | J Jakšić | 1 | 4 | | | | | | | | | |
| | J Pegula | 1 | 1 | | WC | D Lao | 6 | 6 | | | | | | | | | |
| WC | D Lao | 6 | 6 | | | | | | WC | D Lao | 3 | 2 | | | | | |
| | L Embree | 6 | 1 | 2 | | | | | | K Date-Krumm | 6 | 6 | | | | | |
| Q | K Ahn | 1 | 6 | 6 | Q | K Ahn | 3 | 2 | | | | | | | | | |
| | K Date-Krumm | 6 | 6 | | | K Date-Krumm | 6 | 6 | | | | | | | | | |
| 6 | J Boserup | 4 | 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 | Semifinals | Semifinals | Semifinals | Semifinals |
| 5 | N Hibino | 7 | 7 | | | | | | | | | | | | | | |
| Q | C Simmonds | 5 | 5 | | 5 | N Hibino | 6 | 6 | | | | | | | | | |
| | C Whoriskey | 6$^5$ | 6$^4$ | | WC | J Loeb | 3 | 3 | | | | | | | | | |
| WC | J Loeb | 7$^7$ | 7$^7$ | | | | | | | 5 | N Hibino | 6 | 6 | | | | |
| | A Hesse | 3 | 6 | 6 | | | | | | | A Hesse | 1 | 2 | | | | |
| | E Webley-Smith | 6 | 3 | 1 | | A Hesse | 6 | 6 | | | | | | | | | |
| | J Moore | 3 | 7 | 7 | | J Moore | 4 | 4 | | | | | | | | | |
| 3 | M Sanchez | 6 | 5 | 5 | | | | | | | | | | 5 | N Hibino | 7$^7$ | 7$^7$ |
| 8 | N Broady | 6 | 6 | | | | | | | | | | | | S Marand | 6$^5$ | 6$^4$ |
| Q | H El Tabakh | 3 | 2 | | 8 | N Broady | 2 | 6 | 1 | | | | | | | | |
| | M Oudin | 7$^7$ | 6 | | | M Oudin | 6 | 2 | 6 | | | | | | | | |
| | M Arcangioli | 6$^5$ | 4 | | | | | | | | M Oudin | 2 | 2 | | | | |
| WC | B Austin | 5 | 5 | | | | | | | | S Marand | 6 | 6 | | | | |
| | S Marand | 7 | 7 | | | S Marand | 6 | 6 | | | | | | | | | |
| | J Brady | 6 | 6 | | | J Brady | 2 | 4 | | | | | | | | | |
| 2 | E Hozumi | 3 | 3 | | | | | | | | | | | | | | |