2019 Japan Women's Open – Singles

Hsieh Su-wei was the defending champion,^[1] but lost to Nao Hibino in the quarterfinals.

Singles
2019 Japan Women's Open
Champion	Nao Hibino
Runner-up	Misaki Doi
Score	6–3, 6–2

Main article: 2019 Japan Women's Open

Hibino went on to win the title, defeating Misaki Doi in the final, 6–3, 6–2.

Seeds

1. Hsieh Su-wei (quarterfinals)
2. Veronika Kudermetova (semifinals)
3. Alison Van Uytvanck (quarterfinals)
4. Anastasia Potapova (first round)
5. Tatjana Maria (first round)
6. Zarina Diyas (second round, retired)
7. Sara Sorribes Tormo (quarterfinals)
8. Laura Siegemund (quarterfinals)

Draw

Key

• Q = Qualifier
• WC = Wild card
• LL = Lucky loser
• Alt = Alternate
• ITF = ITF entry
• PR = Protected ranking
• SR = Special ranking
• SE = Special exempt
• JE = Junior exempt
• JR = Junior Accelerator Programme entrant
• CO = College Accelerator Programme entrant
• NG = Next Gen Accelerator Program entrant
• w/o = Walkover
• r = Retired
• d = Defaulted

Finals

	Semifinals							Final
		Nao Hibino	4	6	6
		Mihaela Buzărnescu	6	0	3
									Nao Hibino	6	6
									Misaki Doi	3	2
		Misaki Doi	6	6
	2	Veronika Kudermetova	4	3

Top half

	First round							Second round							Quarterfinals							Semifinals
	1	S-w Hsieh	6	3	6
	WC	R Ozaki	1	6	3			1	S-w Hsieh	1	77	7
		K Kawa	0	6	4				P Hon	6	62	5
		P Hon	6	1	6										1	S-w Hsieh	4	3
	Q	LA Fernandez	77	65	5											N Hibino	6	6
		N Hibino	62	77	7				N Hibino	6	3
		D Kovinić	2	2				6	Z Diyas	1	2r
	6	Z Diyas	6	6																			N Hibino	4	6	6
	3	A Van Uytvanck	6	6																			M Buzărnescu	6	0	3
		Y Bonaventure	4	2				3	A Van Uytvanck	6	3	6
		L Samsonova	62	4					K Flipkens	2	6	3
		K Flipkens	77	6											3	A Van Uytvanck	4	5
		M Buzărnescu	6	6												M Buzărnescu	6	7
	Q	V Tomova	1	4					M Buzărnescu	77	7
	WC	K Nara	6	6				WC	K Nara	61	5
	5	T Maria	4	4

Bottom half

	First round							Second round							Quarterfinals							Semifinals
	7	S Sorribes Tormo	6	3	6
		S Cîrstea	2	6	2			7	S Sorribes Tormo	6	6
		V Flink	6	6					V Flink	3	1
		K Kučová	3	2											7	S Sorribes Tormo	5	1
		M Doi	4	7	6											M Doi	7	6
	Q	J Namigata	6	5	2				M Doi	6	1	6
	Q	Z Hives	64	6	6			Q	Z Hives	1	6	3
	4	A Potapova	77	4	4																		M Doi	6	6
	8	L Siegemund	6	6																		2	V Kudermetova	4	3
	Q	V Savinykh	4	1				8	L Siegemund	6	5	7
	Q	PM Țig	6	6				Q	PM Țig	2	7	5
	WC	A Shimizu	4	2											8	L Siegemund	3	6	2
		C McHale	6	6											2	V Kudermetova	6	4	6
		G Minnen	2	4					C McHale	67	2
		V Lepchenko	4	2				2	V Kudermetova	79	6
	2	V Kudermetova	6	6

Qualifying

Seeds

1. Patricia Maria Țig (qualified)
2. Han Na-lae (qualifying competition)
3. Zoe Hives (qualified)
4. Viktoriya Tomova (qualified)
5. Valeria Savinykh (qualified)
6. Destanee Aiava (first round)
7. Mayo Hibi (qualifying competition)
8. Georgina García Pérez (first round)
9. Leylah Annie Fernandez (qualified)
10. Yuki Naito (first round)
11. Jang Su-jeong (qualifying competition)
12. Miharu Imanishi (qualifying competition)

Qualifiers

1. Patricia Maria Țig
2. Leylah Annie Fernandez
3. Zoe Hives
4. Viktoriya Tomova
5. Valeria Savinykh
6. Junri Namigata

Draw

First qualifier

	First round							Qualifying competition
	1	Patricia Maria Țig	3	7	6
		Chihiro Muramatsu	6	5	3
								1	Patricia Maria Țig	6	6
									Kyōka Okamura	1	1
		Kyōka Okamura	6	6
	10	Yuki Naito	2	4

Second qualifier

	First round							Qualifying competition
	2	Han Na-lae	77	3
	WC	Miyu Kato	61	2r
								2	Han Na-lae	3	2
								9	Leylah Annie Fernandez	6	6
		Erina Hayashi	0	4
	9	Leylah Annie Fernandez	6	6

Third qualifier

	First round							Qualifying competition
	3	Zoe Hives	3	6	77
		Akiko Omae	6	2	65
								3	Zoe Hives	6	6
								12	Miharu Imanishi	3	4
		Mai Hontama	4	6	4
	12	Miharu Imanishi	6	2	6

Fourth qualifier

	First round							Qualifying competition
	4	Viktoriya Tomova	6	6
		Ena Shibahara	4	1
								4	Viktoriya Tomova	4	6	6
								7	Mayo Hibi	6	4	2
	WC	Himari Sato	1	2
	7	Mayo Hibi	6	6

Fifth qualifier

	First round							Qualifying competition
	5	Valeria Savinykh	6	2
	WC	Ayumi Morita	2	3r
								5	Valeria Savinykh	6	7
								11	Jang Su-jeong	4	5
	PR	Susanne Celik	4	4
	11	Jang Su-jeong	6	6

Sixth qualifier

	First round							Qualifying competition
	6	Destanee Aiava	2	4
		Junri Namigata	6	6
									Junri Namigata	6	2	6
								WC	Moyuka Uchijima	2	6	4
	WC	Moyuka Uchijima	2	6	6
	8	Georgina García Pérez	6	3	0