2018 Toray Pan Pacific Open
Tennis tournament
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The 2018 Toray Pan Pacific Open is a women's tennis tournament played on indoor hard courts. It was the 35th edition of the Pan Pacific Open, and part of the Premier Series of the 2018 WTA Tour. It took place at the Arena Tachikawa Tachihi in Tachikawa, Tokyo, Japan, on 17–23 September 2018.[1][2]
| 2018 Toray Pan Pacific Open | |
|---|---|
| Date | 17–23 September |
| Edition | 35th |
| Category | WTA Premier |
| Draw | 28S / 16D |
| Prize money | $799,000 |
| Surface | Hard / indoor |
| Location | Tachikawa, Tokyo, Japan |
| Venue | Arena Tachikawa Tachihi |
| Champions | |
| Singles | |
 Karolína Plíšková | |
| Doubles | |
 Miyu Kato / Makoto Ninomiya | |
Finals
Singles
Karolína Plíšková defeated 
Naomi Osaka 6–4, 6–4
Doubles
- Miyu Kato / Makoto Ninomiya defeated Andrea Sestini Hlaváčková / Barbora Strýcová, 6–4, 6–4
Points and prize money
Singles main-draw entrants
Seeds
| Country | Player | Rank | Seeds |
|---|---|---|---|
 DEN |
Caroline Wozniacki | 2 | 1 |
 FRA |
Caroline Garcia | 4 | 2 |
| JPN |
Naomi Osaka | 7 | 3 |
| CZE |
Karolína Plíšková | 8 | 4 |
 USA |
Sloane Stephens | 9 | 5 |
 ESP |
Garbiñe Muguruza | 14 | 6 |
 AUS |
Ashleigh Barty | 17 | 7 |
| CZE |
Barbora Strýcová | 25 | 8 |
- Rankings are as of September 10, 2018
Other entrants
The following players received wild cards into the main singles draw:
The following players received entry from the singles qualifying draw:
Withdrawals
Mihaela Buzărnescu → replaced by 
Aliaksandra Sasnovich
Angelique Kerber → replaced by 
Belinda Bencic
Madison Keys → replaced by 
Anett Kontaveit
Elise Mertens → replaced by 
Anastasia Pavlyuchenkova
Anastasija Sevastova → replaced by 
Camila Giorgi
Carla Suárez Navarro → replaced by 
Donna Vekić
Retirements
Doubles main-draw entrants
Seeds
| Country | Player | Country | Player | Rank1 | Seed |
|---|---|---|---|---|---|
| CZE |
Andrea Sestini Hlaváčková | CZE |
Barbora Strýcová | 18 | 1 |
 CAN |
Gabriela Dabrowski |  CHN |
Xu Yifan | 27 | 2 |
 TPE |
Chan Hao-ching | CHN |
Yang Zhaoxuan | 48 | 3 |
| USA |
Raquel Atawo |  GER |
Anna-Lena Grönefeld | 59 | 4 |
- Rankings are as of September 10, 2018
Other entrants
The following pair received a wildcard into the doubles main draw: