Singles
2017 Gimcheon Open ATP Challenger
Champion	Thomas Fabbiano
Runner-up	Teymuraz Gabashvili
Score	7–5, 6–1

Max Purcell was the defending champion but lost to Bradley Mousley in the second qualifying round.

Thomas Fabbiano won the title after defeating Teymuraz Gabashvili 7–5, 6–1 in the final.

Seeds

Draw

Finals

	Semifinals							Final
	5	Blaž Kavčič	4	3
		Thomas Fabbiano	6	6
									Thomas Fabbiano	7	6
									Teymuraz Gabashvili	5	1
		Teymuraz Gabashvili	1	6	6
	2	Konstantin Kravchuk	6	3	4

Top half

	First round							Second round							Quarterfinals							Semifinals
	1	Y-h Lu	6	6
		P Gunneswaran	2	2				1	Y-h Lu	3	1
		M Chiudinelli	3	6	6				M Chiudinelli	6	6
	WC	Kim Cheong-eui	6	2	3											M Chiudinelli	3	4
		B Klein	6	6											5	B Kavčič	6	6
	WC	Y-s Chung	3	4					B Klein	4	2
	SE	JP Paz	3	3				5	B Kavčič	6	6
	5	B Kavčič	6	6																		5	B Kavčič	4	3
	4	I Marchenko	5	7	6																		T Fabbiano	6	6
		M Tepavac	7	5	1			4	I Marchenko	6	5	4
	Q	B Mousley	5	4					A Santillan	1	7	6
		A Santillan	7	6												A Santillan	2	7	4
		T Fabbiano	6	6												T Fabbiano	6	5	6
	WC	J-m Lee	0	1					T Fabbiano	6	6
		T Ito	6	3	4			7	D-h Lee	3	2
	7	D-h Lee	4	6	6

Bottom half

	First round							Second round							Quarterfinals							Semifinals
	8	G Soeda	77	6
	Q	A Krajicek	63	2				8	G Soeda	4	3
		T Gabashvili	6	6					T Gabashvili	6	6
		O Jasika	2	2												T Gabashvili	6	77
	Q	H Hurkacz	6	6											3	V Pospisil	4	65
		S-w Kwon	4	3				Q	H Hurkacz	65	7	1
		J Jung	5	0				3	V Pospisil	77	5	6
	3	V Pospisil	7	6																			T Gabashvili	1	6	6
	6	R Bemelmans	6	77																		2	K Kravchuk	6	3	4
		M Matosevic	1	62				6	R Bemelmans	1	62
	Q	L Broady	7	6				Q	L Broady	6	77
		H Moriya	5	2											Q	L Broady	77	5	4
	WC	S-c Hong	3	6	4										2	K Kravchuk	65	7	6
	PR	Y Bhambri	6	3	6			PR	Y Bhambri	2	6	3
		S Doumbia	4	2				2	K Kravchuk	6	1	6
	2	K Kravchuk	6	6

References

• Main Draw
• Qualifying Draw