2018 Korea Open – Singles

Jeļena Ostapenko was the defending champion, but lost in the second round to Ekaterina Alexandrova.

Singles
2018 Korea Open
Champion	Kiki Bertens
Runner-up	Ajla Tomljanović
Score	7–6(7–2), 4–6, 6–2
Draw	32
Seeds	8

Main article: 2018 Korea Open (tennis)

Kiki Bertens won the title, defeating Ajla Tomljanović in the final, 7–6^(7–2), 4–6, 6–2.^[1]

This tournament was the last in Agnieszka Radwańska's career. The former world No. 2 played the final match of her professional career in the second round, when she lost to Irina-Camelia Begu in straight sets.

Seeds

1. Jeļena Ostapenko (second round)
2. Kiki Bertens (champion)
3. Maria Sakkari (semifinals)
4. Magdaléna Rybáriková (first round, retired)
5. Alison Van Uytvanck (first round)
6. Hsieh Su-wei (semifinals)
7. Irina-Camelia Begu (Quarterfinal)
8. Kirsten Flipkens (second round)

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
	6	Hsieh Su-wei	4	7	4
		Ajla Tomljanović	6	5	6
									Ajla Tomljanović	62	6	2
								2	Kiki Bertens	77	4	6
	3	Maria Sakkari	4	2
	2	Kiki Bertens	6	6

Top half

	First round							Second round							Quarterfinals							Semifinals
	1	J Ostapenko	6	6
		L Arruabarrena	3	3				1	J Ostapenko	3	2
		J Larsson	1	2					E Alexandrova	6	6
		E Alexandrova	6	6												E Alexandrova	0	1
	WC	J-h Choi	3	6	4										6	S-w Hsieh	6	6
		S Vögele	6	2	6				S Vögele	2	1
	Q	J Teichmann	6	1	60			6	S-w Hsieh	6	6
	6	S-w Hsieh	2	6	77																	6	S-w Hsieh	4	7	4
	4	M Rybáriková	3	2r																			A Tomljanović	6	5	6
	PR	M Minella	6	3				PR	M Minella	6	6
	Q	P Hon	3	6	6			Q	P Hon	4	3
	WC	S-j Jang	6	2	2										PR	M Minella	2	6	5
		P Hercog	1	3												A Tomljanović	6	4	7
		T Zidanšek	6	6					T Zidanšek	6	1	3
		A Tomljanović	3	7	7				A Tomljanović	2	6	6
	5	A Van Uytvanck	6	5	5

Bottom half

	First round							Second round							Quarterfinals							Semifinals
	7	I-C Begu	7	6
	Q	M Barthel	5	4				7	I-C Begu	6	6
	PR	B Mattek-Sands	4	5					A Radwańska	4	3
		A Radwańska	6	7											7	I-C Begu	3	6	4
	Q	V Flink	5	4											3	M Sakkari	6	4	6
	PR	M Gasparyan	7	6				PR	M Gasparyan	2	2
		AK Schmiedlová	0	1				3	M Sakkari	6	6
	3	M Sakkari	6	6																		3	M Sakkari	4	2
	8	K Flipkens	6	6																		2	K Bertens	6	6
	WC	S-h Park	0	2				8	K Flipkens	4	6	5
		E Rodina	6	6					E Rodina	6	4	7
	Q	D Radanović	1	1												E Rodina	6	3	0
		D Jakupović	3	6	6										2	K Bertens	3	6	6
	Q	N-l Han	6	4	3				D Jakupović	4	5
		L Kumkhum	67	2				2	K Bertens	6	7
	2	K Bertens	79	6

Qualifying

Seeds

1. Mona Barthel (qualified)
2. Arantxa Rus (qualifying competition)
3. Jil Teichmann (qualified)
4. Arina Rodionova (first round)
5. Harriet Dart (first round)
6. Priscilla Hon (qualified)
7. Sílvia Soler Espinosa (qualifying competition)
8. Bibiane Schoofs (qualifying competition)
9. Jaimee Fourlis (first round)
10. Dejana Radanović (qualified)
11. Varvara Flink (qualified)
12. Nina Stojanović (first round)

Qualifiers

1. Mona Barthel
2. Varvara Flink
3. Jil Teichmann
4. Dejana Radanović
5. Han Na-lae
6. Priscilla Hon

Qualifying draw

First qualifier

	First round							Qualifying competition
	1	Mona Barthel	6	6
	WC	Hanna Chang	1	3
								1	Mona Barthel	6	6
								7	Sílvia Soler Espinosa	3	4
		Peangtarn Plipuech	3	0
	7	Sílvia Soler Espinosa	6	6

Second qualifier

	First round							Qualifying competition
	2	Arantxa Rus	6	78
	WC	Kim Da-bin	2	66
								2	Arantxa Rus	1	6	66
								11	Varvara Flink	6	3	78
	WC	Jeong Su-nam	2	6	0
	11	Varvara Flink	6	3	6

Third qualifier

	First round							Qualifying competition
	3	Jil Teichmann	6	6
		Amandine Hesse	4	0
								3	Jil Teichmann	6	4	7
								8	Bibiane Schoofs	4	6	5
		Ellen Perez	0	4
	8	Bibiane Schoofs	6	6

Fourth qualifier

	First round							Qualifying competition
	4	Arina Rodionova	77	0	2
		Mai Minokoshi	63	6	6
									Mai Minokoshi	1	4
								10	Dejana Radanović	6	6
	WC	Lee So-ra	6	2	1
	10	Dejana Radanović	2	6	6

Fifth qualifier

	First round							Qualifying competition
	5	Harriet Dart	6	1	5
		Han Na-lae	0	6	7
									Han Na-lae	7	6
								PR	Barbora Štefková	5	3
	PR	Barbora Štefková	6	6
	12	Nina Stojanović	1	1

Sixth qualifier

	First round							Qualifying competition
	6	Priscilla Hon	6	6
		Zhang Yuxuan	4	4
								6	Priscilla Hon	77	6
									Katy Dunne	65	2
		Katy Dunne	2	6	6
	9	Jaimee Fourlis	6	2	2