2018 Japan Women's Open – Singles

Zarina Diyas was the defending champion, but lost in the quarterfinals to Zhang Shuai.

Singles
2018 Japan Women's Open
Champion	Hsieh Su-wei
Runner-up	Amanda Anisimova
Final score	6–2, 6–2

Hsieh Su-wei won her first title in six years, beating Amanda Anisimova in the final 6–2, 6–2.

Seeds

1. Zhang Shuai (Semifinals)
2. Hsieh Su-wei (Champion)
3. Yulia Putintseva (First round, retired)
4. Wang Qiang (Semifinals)
5. Ajla Tomljanović (Quarterfinals)
6. Zarina Diyas (Quarterfinals)
7. Zheng Saisai (Second round)
8. Magda Linette (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
	1	Zhang Shuai	6^4	5
	Q	Amanda Anisimova	7^7	7
								Q	Amanda Anisimova	2	2
								2	Hsieh Su-wei	6	6
	4	Wang Qiang	4	4
	2	Hsieh Su-wei	6	6

Top half

	First Round							Second Round							Quarterfinals							Semifinals
	1	S Zhang	7	6
		M Fręch	5	3				1	S Zhang	6	7^7
	WC	N Hibino	6	6				WC	N Hibino	4	6^4
		E Bouchard	4	4											1	S Zhang	6	7
		K Kozlova	6	6											6	Z Diyas	4	5
	Q	Y Zhang	2	3					K Kozlova	7^7	2	5
		S Sorribes Tormo	2	1				6	Z Diyas	6^3	6	7
	6	Z Diyas	6	6																		1	S Zhang	6^4	5
	3	Y Putintseva	2	0^r																		Q	A Anisimova	7^7	7
		AK Schmiedlová	6	0					AK Schmiedlová	5	7	6
		V Golubic	0	6	7^7				V Golubic	7	5	3
	WC	M Doi	6	3	6^1											AK Schmiedlová	3	1
		J Fett	1	1											Q	A Anisimova	6	6
	Q	A Anisimova	6	6				Q	A Anisimova	6	6
		A Riske	5	4				7	S Zheng	1	1
	7	S Zheng	7	6

Bottom half

	First Round							Second Round							Quarterfinals							Semifinals
	8	M Linette	6	6
		J Larsson	4	1				8	M Linette	6	7^7
		T Zidanšek	6	6					T Zidanšek	3	6^3
	Q	Ar Rodionova	2	4											8	M Linette	2	2
		Y Duan	7	2	2										4	Q Wang	6	6
		L Kumkhum	5	6	6				L Kumkhum	5	3
	Q	P Hon	6	1	3			4	Q Wang	7	6
	4	Q Wang	3	6	6																	4	Q Wang	4	4
	5	A Tomljanović	6	6																		2	S-w Hsieh	6	6
		F Ferro	4	1				5	A Tomljanović	7	6
	WC	M Kato	6^3	2					L Zhu	5	4
		L Zhu	7^7	6											5	A Tomljanović	6	2	0
	PR	M Minella	6	6											2	S-w Hsieh	4	6	6
		K Nara	3	4				PR	M Minella	3	2
		P Hercog	6	1	3			2	S-w Hsieh	6	6
	2	S-w Hsieh	4	6	6

Qualifying

Seeds

1. Amanda Anisimova (Qualified)
2. Antonia Lottner (First round)
3. Arina Rodionova (Qualified)
4. Han Xinyun (Second round)
5. Harriet Dart (Second round)
6. Danka Kovinić (First round)
7. Priscilla Hon (Qualified)
8. Jang Su-jeong (Qualifying competition)

Qualifiers

1. Amanda Anisimova
2. Zhang Yuxuan
3. Arina Rodionova
4. Priscilla Hon

First Qualifier

	First round							Second round							Qualifying competition
	1	Amanda Anisimova	6	6
		Momoko Kobori	3	3
								1	Amanda Anisimova	6	3	6
								WC	Urszula Radwańska	1	6	4
	WC	Urszula Radwańska	7^9	6
		Miharu Imanishi	6^7	1
															1	Amanda Anisimova	6	6
															Alt	Hiroko Kuwata	3	2
	Alt	Hiroko Kuwata	6	6^3	6
		Mai Minokoshi	1	7^7	3
								Alt	Hiroko Kuwata	6	7
								5	Harriet Dart	4	5
	WC	Makoto Ninomiya	2	7^7	2
	5	Harriet Dart	6	6^5	6

Second Qualifier

	First round							Second round							Qualifying competition
	2	Antonia Lottner	3	4
		Zhang Yuxuan	6	6
									Zhang Yuxuan	6	7
									Valeria Savinykh	3	5
		Zhang Kailin	3	7	4
		Valeria Savinykh	6	5	6
																Zhang Yuxuan	4	6	6
															8	Jang Su-jeong	6	3	1
		Junri Namigata	2	3
		Danielle Lao	6	6
									Danielle Lao	5	3
								8	Jang Su-jeong	7	6
		Ellen Perez	6	3	3
	8	Jang Su-jeong	3	6	6

Third Qualifier

	First round							Second round							Qualifying competition
	3	Arina Rodionova	6	0
		Eri Hozumi	0	0^r
								3	Arina Rodionova	3	6	7
								WC	Chihiro Muramatsu	6	4	5
		Risa Ozaki	4	6	3
	WC	Chihiro Muramatsu	6	3	6
															3	Arina Rodionova	3	6	6
																Sílvia Soler Espinosa	6	2	3
		Anna Zaja	6	6
		Dejana Radanović	4	3
									Anna Zaja	3	4
									Sílvia Soler Espinosa	6	6
		Sílvia Soler Espinosa	6	7
	6	Danka Kovinić	4	5

Fourth Qualifier

	First round							Second round							Qualifying competition
	4	Han Xinyun	6	6
	WC	Shuko Aoyama	4	1
								4	Han Xinyun	6^7	5
									Varvara Flink	7^9	7
		Jaimee Fourlis	5	2
		Varvara Flink	7	6
																Varvara Flink	3	2
															7	Priscilla Hon	6	6
		Liang En-shuo	6	5	4
		Han Na-lae	3	7	6
									Han Na-lae	2	2
								7	Priscilla Hon	6	6
		Deniz Khazaniuk	3	6^5
	7	Priscilla Hon	6	7^7

References

• Main Draw
• Qualifying Draw