2017 Japan Women's Open – Singles

Christina McHale was the defending champion, but lost in the semifinals to Zarina Diyas.

Singles
2017 Japan Women's Open
Champion	Zarina Diyas
Runner-up	Miyu Kato
Final score	6–2, 7–5

Main article: 2017 Japan Women's Open

Qualifier Diyas went on to win her first WTA title, defeating another qualifier Miyu Kato in the final, 6–2, 7–5.

Former world no. 4 Kimiko Date played her last professional match at this tournament, losing in straight sets to Aleksandra Krunić in the first round without winning a single game.

Seeds

1. Kristina Mladenovic (First round)
2. Zhang Shuai (Second round)
3. Elise Mertens (Quarterfinals)
4. Kristýna Plíšková (Second round)
5. Samantha Stosur (First round)
6. Naomi Osaka (First round)
7. Alison Riske (Second round)
8. Yulia Putintseva (Quarterfinals)

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

Finals

	Semifinals							Final
	Q	Jana Fett	6	6^1	4
	Q	Miyu Kato	4	7^7	6
								Q	Miyu Kato	2	5
								Q	Zarina Diyas	6	7
		Christina McHale	4	6	3
	Q	Zarina Diyas	6	0	6

Top Half

	First Round							Second Round							Quarterfinals							Semifinals
	1/WC	K Mladenovic	3	4
	Q	J Fett	6	6				Q	J Fett	6	6
		A Sasnovich	3	0^r					J Čepelová	0	3
		J Čepelová	6	1											Q	J Fett	6	4	6
		S-w Hsieh	5	2												Q Wang	3	6	3
		Q Wang	7	6					Q Wang	6	6
		K Nara	6	6					K Nara	2	3
	6	N Osaka	3	0																		Q	J Fett	6	6^1	4
	4/WC	Kr Plíšková	7	7																		Q	M Kato	4	7^7	6
		K-c Chang	5	5				4/WC	Kr Plíšková	5	3
	Q	M Kato	6	6				Q	M Kato	7	6
		N Hibino	3	4											Q	M Kato	6	6
		A Krunić	6	6												A Krunić	1	3
	WC	K Date	0	0					A Krunić	6	6
		M Brengle	7	3	4			7	A Riske	3	4
	7	A Riske	5	6	6

Bottom Half

	First Round							Second Round							Quarterfinals							Semifinals
	5	S Stosur	6	5	1
		S Sorribes Tormo	3	7	6				S Sorribes Tormo	1	1
		C McHale	6	6					C McHale	6	6
	Q	D Kovinić	2	4												C McHale	6	6
		R Ozaki	1	5											3	E Mertens	4	1
		M Linette	6	7					M Linette	1	5
		E Rodina	6^6	1				3	E Mertens	6	7
	3	E Mertens	7^8	6																			C McHale	4	6	3
	8	Y Putintseva	6	4	6																	Q	Z Diyas	6	0	6
		Y Duan	4	6	4			8	Y Putintseva	6	2
	PR	M Eguchi	5	2					X Han	2	0^r
		X Han	7	6											8	Y Putintseva	6	1	3
	Q	Z Diyas	3	6	6										Q	Z Diyas	4	6	6
		M Doi	6	1	1			Q	Z Diyas	6	6
		R Hogenkamp	3	3				2	S Zhang	4	2
	2	S Zhang	6	6

Qualifying

Seeds

1. Danka Kovinić (Qualified)
2. Zarina Diyas (Qualified)
3. Kristie Ahn (First round)
4. Jana Fett (Qualified)
5. Arina Rodionova (Second round)
6. Jang Su-jeong (Second round)
7. Arantxa Rus (First round)
8. Quirine Lemoine (Second round)

Qualifiers

1. Danka Kovinić
2. Zarina Diyas
3. Miyu Kato
4. Jana Fett

Qualifying Draw

First Qualifier

	First round							Second round							Qualifying competition
	1	Danka Kovinić	3	6	6
		Jennifer Elie	6	4	3
								1	Danka Kovinić	2	6	6
								Alt	Erika Sema	6	3	2
	WC	Moyuka Uchijima	6	4	2
	Alt	Erika Sema	3	6	6
															1	Danka Kovinić	6	3	6
																Miharu Imanishi	3	6	2
		İpek Soylu	2	1
		Miharu Imanishi	6	6
									Miharu Imanishi	2	6	6
									Lizette Cabrera	6	4	0
		Lizette Cabrera	6	4	6
	7	Arantxa Rus	2	6	3

Second Qualifier

	First round							Second round							Qualifying competition
	2	Zarina Diyas	6	6
		Danielle Collins	3	2
								2	Zarina Diyas	6	6
									Giulia Gatto-Monticone	3	2
		Ayano Shimizu	2	4
		Giulia Gatto-Monticone	6	6
															2	Zarina Diyas	1	7^7	6
																Luksika Kumkhum	6	6^4	4
		Mayo Hibi	2	6	4
		Luksika Kumkhum	6	3	6
									Luksika Kumkhum	6	6
								6	Jang Su-jeong	4	4
	WC	Himari Sato	1	2
	6	Jang Su-jeong	6	6

Third Qualifier

	First round							Second round							Qualifying competition
	3	Kristie Ahn	6^1	6	4
		Miyu Kato	7^7	4	6
									Miyu Kato	6	6
									Başak Eraydın	3	0
		Başak Eraydın	4	7^7	6
		Riko Sawayanagi	6	6^4	3
																Miyu Kato	6	2	7^7
																Magdalena Fręch	3	6	6^3
		Rebecca Peterson	6	5	2
		Magdalena Fręch	3	7	6
									Magdalena Fręch	4	7^7	6
								5	Arina Rodionova	6	6^3	1
	WC	Mari Osaka	6	4	4
	5	Arina Rodionova	4	6	6

Fourth Qualifier

	First round							Second round							Qualifying competition
	4	Jana Fett	6	6
		Eri Hozumi	2	2
								4	Jana Fett	6	4	6
									Karolína Muchová	1	6	4
		Hiroko Kuwata	4	2
		Karolína Muchová	6	6
															4	Jana Fett	6	6
																Lesley Kerkhove	4	0
		Junri Namigata	2	1
		Lesley Kerkhove	6	6
									Lesley Kerkhove	6	7
								8	Quirine Lemoine	3	5
		Peangtarn Plipuech	1	5
	8	Quirine Lemoine	6	7

References

• Main Draw
• Qualifying Draw