The 2018 İstanbul Cup (also known as the TEB BNP Paribas İstanbul Cup for sponsorship reasons) was a tennis tournament played on outdoor clay courts. It was the 11th edition of the İstanbul Cup, and part of the WTA International tournaments of the 2018 WTA Tour. It took place in Istanbul, Turkey, from 23 through 29 April 2018.
Points and prize money
| Event | W | F | SF | QF | Round of 16 | Round of 32 | Q | Q2 | Q1 |
| Women's singles | 280 | 180 | 110 | 60 | 30 | 1 | 18 | 12 | 1 |
|---|---|---|---|---|---|---|---|---|---|
| Women's doubles | 1 | — | — | — | — |
Prize money
| Event | W | F | SF | QF | Round of 16 | Round of 32 | Q2 | Q1 |
| Women's singles | $43,000 | $21,400 | $11,500 | $6,175 | $3,400 | $2,100 | $1,020 | $600 |
|---|---|---|---|---|---|---|---|---|
| Women's doubles | $12,300 | $6,400 | $3,435 | $1,820 | $960 | — | — | — |
Singles main-draw entrants
Seeds
| Country | Player | Rank1 | Seed |
|---|---|---|---|
 DEN
|
Caroline Wozniacki | 2 | 1 |
 RUS
|
Svetlana Kuznetsova | 28 | 2 |
 POL
|
Agnieszka Radwańska | 29 | 3 |
 CHN
|
Zhang Shuai | 30 | 4 |
| RUS
|
Ekaterina Makarova | 32 | 5 |
 ROU
|
Sorana Cîrstea | 34 | 6 |
| ROU
|
Irina-Camelia Begu | 38 | 7 |
 BLR
|
Aryna Sabalenka | 47 | 8 |
- Rankings are as of April 16, 2018.
Other entrants
The following players received wildcards into the singles main draw:
The following players received entry from the qualifying draw:
Withdrawals
Beatriz Haddad Maia → replaced by 
Christina McHale
Kateryna Kozlova → replaced by 
Ajla Tomljanović
Tatjana Maria → replaced by 
Sara Errani
Naomi Osaka → replaced by 
Polona Hercog
Retirements
Doubles main-draw entrants
Seeds
| Country | Player | Country | Player | Rank1 | Seed |
|---|---|---|---|---|---|
| UKR
|
Kateryna Bondarenko |  SRB
|
Aleksandra Krunić | 109 | 1 |
 NED
|
Bibiane Schoofs |  CZE
|
Renata Voráčová | 123 | 2 |
 SUI
|
Xenia Knoll |  GBR
|
Anna Smith | 123 | 3 |
| SLO
|
Dalila Jakupović | RUS
|
Irina Khromacheva | 123 | 4 |
- 1 Rankings as of April 16, 2018.
Other entrants
The following pairs received wildcards into the doubles main draw:
Withdrawals
- During the tournament
Champions
Singles
Pauline Parmentier def. Polona Hercog, 6–4, 3–6, 6–3[1]
Doubles
- Liang Chen / Zhang Shuai def. Xenia Knoll / Anna Smith, 6–4, 6–4[1]
References
- ^ a b "Standings WTA Istanbul 2018 - Tennis". Eurosport. Retrieved 2018-05-25.