# 2015 ITF Women's Circuit UBS Thurgau – Singles

Michaëlla Krajicek was the defending champion, however she chose to participate in Dubai instead.
Olga Govortsova won the title, defeating Rebecca Šramková in the final, 6–2, 6–1.

## Seeds

* Denisa Allertová (first round)
* Anna-Lena Friedsam (second round)
* Romina Oprandi (quarterfinals, retired)
* Ons Jabeur (second round)
* Tamira Paszek (withdrew)
* Kristýna Plíšková (semifinals)
* Laura Siegemund (second round)
* Olga Govortsova (champion)

## 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 |
| 6 | Kristýna Plíšková | 0 | 6 | 3 | | | | |
| 8 | Olga Govortsova | 6 | 3 | 6 | | | | |
| 8 | Olga Govortsova | 6 | 3 | 6 | 8 | Olga Govortsova | 6 | 6 |
| | | | | | Q | Rebecca Šramková | 2 | 1 |
| Q | Rebecca Šramková | 7$^7$ | 7$^9$ | | Q | Rebecca Šramková | 2 | 1 |
| | Jeļena Ostapenko | 6$^2$ | 6$^7$ | | | | | |

### Top 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 | Semifinals |
| 1 | D Allertová | 4 | 1 | | | | | | | | | | | | | | | |
| | V Dolonc | 6 | 6 | | | V Dolonc | 6 | 1 | 6 | | | | | | | | | |
| | V Golubic | 6 | 3 | 6 | | V Golubic | 1 | 6 | 4 | | | | | | | | | |
| | A Brianti | 4 | 6 | 1 | | | | | | | V Dolonc | 1 | 3 | | | | | |
| | P Kania | 6 | 6 | | | | | | | 6 | Kr Plíšková | 6 | 6 | | | | | |
| WC | N Stadler | 2 | 2 | | | P Kania | 4 | 2 | | | | | | | | | | |
| Q | T Moore | 5 | 3 | | 6 | Kr Plíšková | 6 | 6 | | | | | | | | | | |
| 6 | Kr Plíšková | 7 | 6 | | | | | | | | | | | 6 | Kr Plíšková | 0 | 6 | 3 |
| 3 | R Oprandi | 6 | 3 | 6 | | | | | | | | | | 8 | O Govortsova | 6 | 3 | 6 |
| | L Kichenok | 4 | 6 | 2 | 3 | R Oprandi | 6 | 0 | 7 | | | | | | | | | |
| | S Foretz | 7 | 6 | | | S Foretz | 1 | 6 | 5 | | | | | | | | | |
| WC | J Teichmann | 5 | 1 | | | | | | | 3 | R Oprandi | 3 | 0$^r$ | | | | | |
| WC | K Kennel | 6 | 2 | 3 | | | | | | 8 | O Govortsova | 6 | 1 | | | | | |
| WC | T Sugnaux | 4 | 6 | 6 | WC | T Sugnaux | 2 | 2 | | | | | | | | | | |
| | X Knoll | 2 | 6 | 6$^9$ | 8 | O Govortsova | 6 | 6 | | | | | | | | | | |
| 8 | O Govortsova | 6 | 4 | 7$^{11}$ | | | | | | | | | | | | | | |

### 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 |
| 7 | L Siegemund | 6 | 6 | | | | | | | | | | | | | | |
| PR | K Wörle-Scheller | 1 | 1 | | 7 | L Siegemund | 6$^5$ | 2 | | | | | | | | | |
| | A Hlaváčková | 6 | 6 | | | A Hlaváčková | 7$^7$ | 6 | | | | | | | | | |
| | K von Deichmann | 4 | 2 | | | | | | | | A Hlaváčková | 3 | 5 | | | | |
| | M Sirotkina | 3 | 6$^6$ | | | | | | | Q | R Šramková | 6 | 7 | | | | |
| Q | R Šramková | 6 | 7$^7$ | | Q | R Šramková | 6$^4$ | 6 | 6 | | | | | | | | |
| | M Melnikova | 6 | 2 | 4 | 4 | O Jabeur | 7$^7$ | 4 | 1 | | | | | | | | |
| 4 | O Jabeur | 3 | 6 | 6 | | | | | | | | | | Q | R Šramková | 7$^7$ | 7$^9$ |
| LL | J Jegiołka | 6 | 6 | | | | | | | | | | | | J Ostapenko | 6$^2$ | 6$^7$ |
| Q | J Malečková | 2 | 2 | | LL | J Jegiołka | 1 | 2 | | | | | | | | | |
| | I Ramialison | 1 | 3 | | | J Ostapenko | 6 | 6 | | | | | | | | | |
| | J Ostapenko | 6 | 6 | | | | | | | | J Ostapenko | 6 | 6 | | | | |
| Q | T Morderger | 4 | 6 | 2 | | | | | | | E Alexandrova | 3 | 3 | | | | |
| | E Alexandrova | 6 | 0 | 6 | | E Alexandrova | 6 | 6 | | | | | | | | | |
| | N Kichenok | 6$^7$ | 7$^7$ | 3 | 2 | A-L Friedsam | 4 | 3 | | | | | | | | | |
| 2 | A-L Friedsam | 7$^9$ | 6$^5$ | 6 | | | | | | | | | | | | | |