2018 Toray Pan Pacific Open
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| 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 | |
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]
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
Point distribution
| Event | W | F | SF | QF | Round of 16 | Round of 32 | Q | Q2 | Q1 |
| Singles[3] | 470 | 305 | 185 | 100 | 55 | 1 | 25 | 13 | 1 |
|---|---|---|---|---|---|---|---|---|---|
| Doubles[3] | 1 | — | — | — | — |
Prize money
| Event | W | F | SF | QF | Round of 16 | Round of 32* | Q2 | Q1 | |
| Singles | $137,125 | $76,063 | $39,080 | $21,010 | $11,265 | $7,150 | $3,447 | $1,750 | |
| Doubles | $42,850 | $22,900 | $12,510 | $6,365 | $3,460 | — | — | — | |
| Doubles prize money per team | |||||||||
^* Qualifiers prize money is also the round of 32 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
