Singles
2019 Santaizi ATP Challenger
Final
Champion	Dennis Novak
Runner-up	Sergiy Stakhovsky
Score	6–2, 6–4
Events
Singles Doubles
← 2018 · Santaizi ATP Challenger · 2024 →

Yuki Bhambri was the defending champion but chose not to defend his title.^[1]

Dennis Novak won the title after defeating Sergiy Stakhovsky 6–2, 6–4 in the final.

All seeds receive a bye into the second round.

	Quarterfinals							Semifinals							Final
	13	Kwon Soon-woo	78	6
	9	Ramkumar Ramanathan	66	3
								13	Kwon Soon-woo	3	4
								11	Dennis Novak	6	6
	15	Yūichi Sugita	65	3
	11	Dennis Novak	77	6
															11	Dennis Novak	6	6
															3	Sergiy Stakhovsky	2	4
	10	Tatsuma Ito	63	77	4
	3	Sergiy Stakhovsky	77	65	6
								3	Sergiy Stakhovsky	77	77
									Go Soeda	64	64
	7	Jason Jung	63	1
		Go Soeda	77	6

	First round							Second round							Third round							Quarterfinals
								1	L Harris	79	6
	LL	B Klein	6	7				LL	B Klein	67	2
	Q	C-p Hsieh	3	5											1	L Harris	5	77	3
	Q	S Balaji	4	77	4										13	S-w Kwon	7	63	6
		L Saville	6	64	6				L Saville	4	4
								13	S-w Kwon	6	6
																						13	S-w Kwon	78	6
																						9	R Ramanathan	66	3
								9	R Ramanathan	6	6
		Y-s Chung	6	65	4				M Banes	3	2
		M Banes	2	77	6										9	R Ramanathan	4	6	6
		C Altamirano	5	7	3										WC	C-h Lo	6	3	2
	WC	Lo Chien-hsun	7	5	6			WC	C-h Lo	61	4
								8	M Baghdatis	77	2r

	First round							Second round							Third round							Quarterfinals
								4	L Lacko	4	77	6
		M-A Hüsler	77	65	6				M-A Hüsler	6	60	2
		M Purcell	64	77	1										4	L Lacko	6	3	4
		S Mukund	3	4											15	Y Sugita	3	6	6
		C İlkel	6	6					C İlkel	5	3
								15	Y Sugita	7	6
																						15	Y Sugita	65	3
																						11	D Novak	77	6
								11	D Novak	6	6
		Renta Tokuda	6	6					R Tokuda	2	2
		Y Takahashi	2	1											11	D Novak	6	66	6
		K Uchida	6	6												K Uchida	3	78	4
		D-h Lee	4	4					K Uchida	78	6
								5	M Bachinger	66	2

	First round							Second round							Third round							Quarterfinals
								6	K Majchrzak	6	6
		A Santillan	6	77					A Santillan	3	1
	WC	Y-h Hsu	4	65											6	K Majchrzak	77	67	62
	WC	K-y Lee	6	6											10	T Ito	63	79	77
	WC	R Ho	4	2				WC	K-y Lee	3	3
								10	T Ito	6	6
																						10	T Ito	63	77	4
																						3	S Stakhovsky	77	65	6
								16	M Janvier	6	7
	PR	I Marchenko	6	3	4				TK Wang	4	5
		TK Wang	4	6	6										16	M Janvier	5	4
		S Robert	6	6											3	S Stakhovsky	7	6
		G Oliveira	3	4					S Robert	62	2
								3	S Stakhovsky	77	6

	First round							Second round							Third round							Quarterfinals
								7	J Jung	6	6
		T-l Wu	6	6					T-l Wu	4	4
	WC	C-y Yu	4	3											7	J Jung	6	6
		Makoto Ochi	4	3											12	J Duckworth	2	2
		T-h Yang	6	6					T-h Yang	66	0
								12	J Duckworth	78	6
																						7	J Jung	63	1
																							G Soeda	77	6
								14	H Moriya	6	4	4
		A Harris	77	4	6				A Harris	4	6	6
		S Myneni	64	6	2											A Harris	2	3
		G Soeda	68	6	6											G Soeda	6	6
		Y Uchiyama	710	4	2				G Soeda	4	6	77
								2	E Donskoy	6	4	65

• Main draw
• Qualifying draw