2018 Japan Women's Open

The 2018 Japan Women's Open was a women's tennis tournament played on outdoor hard courts. It was the tenth edition of the Japan Women's Open, and part of the WTA International tournaments of the 2018 WTA Tour. It was held at the Regional Park Tennis Stadium in Hiroshima, Japan, from September 10 through September 16, 2018. This is the first year that the tournament was held in Hiroshima.^[1]

2018 Japan Women's Open
Date	September 10–16
Edition	10th
Category	WTA International
Draw	32S / 16D
Prize money	$250,000
Surface	Hard
Location	Hiroshima, Japan
Venue	Regional Park Tennis Stadium
Champions
Singles
Hsieh Su-wei
Doubles
Eri Hozumi / Zhang Shuai

Point distribution

Event	W	F	SF	QF	Round of 16	Round of 32	Q	Q3	Q2	Q1
Singles	280	180	110	60	30	1	18	14	10	1
Doubles					1	—	—	—	—	—

Prize money

Event	W	F	SF	QF	Round of 16	Round of 321	Q3	Q2	Q1
Singles	$43,000	$21,400	$11,300	$5,900	$3,310	$1,925	$1,005	$730	$530
Doubles2	$12,300	$6,400	$3,435	$1,820	$960	—	—	—	—

_{¹ Qualifiers prize money is also the Round of 32 prize money
² Per team}

Singles main-draw entrants

Seeds

Country	Player	Rank1	Seed
CHN	Zhang Shuai	34	1
TPE	Hsieh Su-wei	43	2
KAZ	Yulia Putintseva	50	3
CHN	Wang Qiang	52	4
AUS	Ajla Tomljanović	58	5
KAZ	Zarina Diyas	60	6
CHN	Zheng Saisai	63	7
POL	Magda Linette	68	8

• Rankings are as of August 27, 2018

Other entrants

The following players received wildcards into the singles main draw:

• Misaki Doi
• Nao Hibino
• Miyu Kato

The following player entered the singles main draw with a protected ranking:

• Mandy Minella

The following players received entry from the qualifying draw:

• Amanda Anisimova
• Priscilla Hon
• Arina Rodionova
• Zhang Yuxuan

Withdrawals

Before the tournament

• Ana Bogdan → replaced by Fiona Ferro
• Jennifer Brady → replaced by Jana Fett
• Aliaksandra Sasnovich → replaced by Duan Yingying
• Stefanie Vögele → replaced by Magdalena Fręch

Retirements

• Yulia Putintseva (lower back injury)

Doubles main-draw entrants

Seeds

Country	Player	Country	Player	Rank1	Seed
JPN	Miyu Kato	JPN	Makoto Ninomiya	80	1
JPN	Eri Hozumi	CHN	Zhang Shuai	94	2
JPN	Shuko Aoyama	CHN	Duan Yingying	121	3
SUI	Viktorija Golubic	SWE	Johanna Larsson	123	4

• ¹ Rankings are as of August 27, 2018^[2]

Other entrants

The following pairs received wildcards into the doubles main draw:

• Miharu Imanishi / Alicja Rosolska
• Hiroko Kuwata / Chihiro Muramatsu

Withdrawals

During the tournament

• Priscilla Hon (gastrointestinal illness)

Champions

Singles

Main article: 2018 Japan Women's Open – Singles

• Hsieh Su-wei def. Amanda Anisimova 6–2, 6–2

Doubles

Main article: 2018 Japan Women's Open – Doubles

• Eri Hozumi / Zhang Shuai def. Miyu Kato / Makoto Ninomiya 6–2, 6–4