2018 International Challenger Zhangjiagang – Singles

Jason Jung was the defending champion but lost in the final to Yasutaka Uchiyama.

Singles
2018 International Challenger Zhangjiagang
Champion	Yasutaka Uchiyama
Runner-up	Jason Jung
Score	6–2, 6–2

Main article: 2018 International Challenger Zhangjiagang

Uchiyama won the title after defeating Jung 6–2, 6–2 in the final.

Seeds

1. Jason Jung (final)
2. Tatsuma Ito (second round)
3. Zhang Ze (first round)
4. Go Soeda (second round)
5. Filip Peliwo (first round)
6. Miomir Kecmanović (semifinals)
7. Hiroki Moriya (second round)
8. Alexander Bublik (semifinals)

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
	1	Jason Jung	77	65	6
	8	Alexander Bublik	63	77	0
								1	Jason Jung	2	2
									Yasutaka Uchiyama	6	6
		Yasutaka Uchiyama	6	4	7
	6	Miomir Kecmanović	3	6	5

Top half

	First round							Second round							Quarterfinals							Semifinals
	1	J Jung	6	6
	Q	Y Shimizu	4	3				1	J Jung	6	6
		Z Li	0	6	3			WC	Zh Zhang	4	4
	WC	Zh Zhang	6	1	6										1	J Jung	7	6
		T-h Yang	4	1r												A Santillan	5	2
		A Santillan	6	3					A Santillan	7	64	6
	WC	R Te	6	6				WC	R Te	5	77	4
	5	F Peliwo	4	4																		1	J Jung	77	65	6
	4	G Soeda	7	7																		8	A Bublik	63	77	0
		A Bega	5	5				4	G Soeda	5	6	2
		Y-s Chung	3	6	6				Y-s Chung	7	3	6
		R Safiullin	6	4	3											Y-s Chung	4	4
	Q	D Kelly	77	7											8	A Bublik	6	6
		S-w Kwon	65	5				Q	D Kelly	5	4
	LL	Y Takahashi	3	4				8	A Bublik	7	6
	8	A Bublik	6	6

Bottom half

	First round							Second round							Quarterfinals							Semifinals
	7	H Moriya	78	6
	Q	T Lamasine	66	2				7	H Moriya	6	65	3
		Y Uchiyama	6	4					Y Uchiyama	4	77	6
		B Kavčič	3	2r												Y Uchiyama	6	6
		U Ignatik	6	77												U Ignatik	4	3
		A Šetkić	2	63					U Ignatik	78	6
		D-h Lee	6	5	6				D-h Lee	66	1
	3	Ze Zhang	3	7	0																		Y Uchiyama	6	4	7
	6	M Kecmanović	6	3	6																	6	M Kecmanović	3	6	5
		M Purcell	3	6	3			6	M Kecmanović	2	6	6
	Q	F Ferreira Silva	4	4					J Rodionov	6	3	3
		J Rodionov	6	6											6	M Kecmanović	6	6
	WC	Y Wu	6	6											WC	Y Wu	4	4
	WC	Y He	3	4				WC	Y Wu	78	4	6
		S Diez	4	1				2	T Ito	66	6	3
	2	T Ito	6	6

References

• Main Draw
• Qualifying Draw