2017 Seoul Open Challenger – Singles

Sergiy Stakhovsky was the defending champion but chose not to defend his title.

Singles
2017 Seoul Open Challenger
Champion	Thomas Fabbiano
Runner-up	Kwon Soon-woo
Final score	1–6, 6–4, 6–3

Main article: 2017 Seoul Open Challenger

Thomas Fabbiano won the title after defeating Kwon Soon-woo 1–6, 6–4, 6–3 in the final.

Seeds

1. Lu Yen-hsun (First round)
2. Chung Hyeon (Withdrew)
3. Dudi Sela (Quarterfinals, retired)
4. Konstantin Kravchuk (First round)
5. Vasek Pospisil (Second round)
6. Blaž Kavčič (First round)
7. Illya Marchenko (First round)
8. Ruben Bemelmans (Semifinals)

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
	8	Ruben Bemelmans	4	1
		Thomas Fabbiano	6	6
									Thomas Fabbiano	1	6	6
									Kwon Soon-woo	6	4	3
		Lee Duck-hee	3	0
		Kwon Soon-woo	6	6

Top half

	First Round							Second Round							Quarterfinals							Semifinals
	1	Y-h Lu	3	4
	WC	Y-s Chung	6	6				WC	Y-s Chung	6	6^4	3
	SE	L Broady	3	4					H Moriya	4	7^7	6
		H Moriya	6	6												H Moriya	3	1
		A Santillan	7	4	3										8	R Bemelmans	6	6
	LL	L Saville	5	6	6			LL	L Saville	4	6	5
		B Klein	4	6	1			8	R Bemelmans	6	3	7
	8	R Bemelmans	6	3	6																	8	R Bemelmans	4	1
	4	K Kravchuk	4	3																			T Fabbiano	6	6
		G Soeda	6	6					G Soeda	6	6
	PR	A Ward	3	4				WC	Y-s Kim	2	4
	WC	Kim Young-seok	6	6												G Soeda	6	2	3
		O Jasika	4	7^8	6^1											T Fabbiano	3	6	6
		M Chiudinelli	6	6^6	7^7				M Chiudinelli	1	2
		T Fabbiano	6	6					T Fabbiano	6	6
	7	I Marchenko	2	4

Bottom half

	First Round							Second Round							Quarterfinals							Semifinals
	5	V Pospisil	6	6
		S Doumbia	3	2				5	V Pospisil	6	6^3	6^6
		D-h Lee	6	6					D-h Lee	2	7^7	7^8
	Q	Shuichi Sekiguchi	0	3												D-h Lee	5	7^9	3
		S Bangoura	2	1											3	D Sela	7	6^7	0^r
	Q	F Auger-Aliassime	6	6				Q	F Auger-Aliassime	3	1
	WC	Ho Chung	5	3				3	D Sela	6	6
	3	D Sela	7	6																			D-h Lee	3	0
	6	B Kavčič	6^4	3																			S-w Kwon	6	6
		S-w Kwon	7^7	6					S-w Kwon	7^7	6
		T Ito	2	3				Alt	M Tepavac	6^1	1
	Alt	M Tepavac	6	6												S-w Kwon	6^7	6	6
	Q	A Krajicek	7^16	6												A Sarkissian	7^9	4	3
	WC	S-c Hong	6^14	3				Q	A Krajicek	1	2
		A Sarkissian	6	6					A Sarkissian	6	6
	Q	D Nguyen	3	4

References

• Main Draw
• Qualifying Draw