Singles
2019 Tiburon Challenger
Final
Champion	Tommy Paul
Runner-up	Thanasi Kokkinakis
Score	7–5, 6–7(3–7), 6–4
Events
Singles Doubles
← 2018 · Tiburon Challenger · 2022 →

Michael Mmoh was the defending champion^[1] but lost in the second round to Brandon Nakashima.

Tommy Paul won the title after defeating Thanasi Kokkinakis 7–5, 6–7^(3–7), 6–4 in the final.

All seeds receive a bye into the second round.

	Quarterfinals							Semifinals							Final
	1	Tommy Paul	6	1	77
		Gonzalo Escobar	4	6	62
								1	Tommy Paul	6	77
								4	Emilio Gómez	1	65
	4	Emilio Gómez	6	1	6
		Sekou Bangoura	3	6	2
															1	Tommy Paul	7	63	6
															8	Thanasi Kokkinakis	5	77	4
	WC	Brandon Nakashima	5	6	66
	14	Thai-Son Kwiatkowski	7	1	78
								14	Thai-Son Kwiatkowski	6	2	1
								8	Thanasi Kokkinakis	2	6	6
	8	Thanasi Kokkinakis	6	6
	16	Maxime Cressy	4	2

	First round							Second round							Third round							Quarterfinals
								1	T Paul	5	6	6
	WC	B Holt	6	66	6			WC	B Holt	7	3	2
	PR	R Sarmiento	4	78	3										1	T Paul	710	6
		H Gaston	3	6	6											H Gaston	68	1
		Evan Song	6	4	4				H Gaston	3	6	6
								13	DE Galán	6	3	4
																						1	T Paul	6	1	77
																							G Escobar	4	6	62
								11	M Krueger	67	3
		Roy Smith	2	6	2				G Escobar	79	6
		G Escobar	6	3	6											G Escobar	6	711
		A Ritschard	0	4											5	M Torpegaard	4	69
		R Peniston	6	6					R Peniston	6	4	3
								5	M Torpegaard	4	6	6

	First round							Second round							Third round							Quarterfinals
								4	E Gómez	5	6	6
		M Pervolarakis	6	77					M Pervolarakis	7	0	4
		C Sinclair	3	60											4	E Gómez	77	2	6
		D Young	6	6											15	E Escobedo	64	6	2
		R Shane	1	1					D Young	1	2r
								15	E Escobedo	6	4
																						4	E Gómez	6	1	6
																							S Bangoura	3	6	2
								12	P Polansky	1	4
		S Bangoura	6	7					S Bangoura	6	6
	Q	M Geerts	4	5												S Bangoura	1	6	6
	WC	E Nava	2	3											7	D King	6	4	0
		U Blanch	6	6					U Blanch	6	62	5
								7	D King	2	77	7

	First round							Second round							Third round							Quarterfinals
								6	M Mmoh	7	3	4
		Ma Redlicki	3	3				WC	B Nakashima	5	6	6
	WC	B Nakashima	6	6											WC	B Nakashima	77	7
	Q	E Zhu	3	4											10	C Eubanks	65	5
		M Arévalo	6	6					M Arévalo	4	4
								10	C Eubanks	6	6
																						WC	B Nakashima	5	6	66
																						14	T-S Kwiatkowski	7	1	78
								14	T-S Kwiatkowski	6	6
	PR	C Gómez-Herrera	6	4	6			PR	C Gómez-Herrera	4	4
		S Fanselow	4	6	2										14	T-S Kwiatkowski	4	77	6
		F Peliwo	3	7	3										3	M Giron	6	63	4
		Mi Redlicki	6	5	6				Mi Redlicki	4	5
								3	M Giron	6	7

	First round							Second round							Third round							Quarterfinals
								8	T Kokkinakis	6	6
		E Leshem	63	6	6				E Leshem	4	0
	WC	O Crawford	77	4	4										8	T Kokkinakis	7	6
		JC Aragone	6	77											9	E Couacaud	5	1
		C Altamirano	2	63					JC Aragone	3	1
								9	E Couacaud	6	6
																						8	T Kokkinakis	6	6
																						16	M Cressy	4	2
								16	M Cressy	6	6
		A Sarkissian	77	63	4				J. J. Wolf	1	4
		J. J. Wolf	63	77	6										16	M Cressy	5	6	6
	WC	O Štyler	6	4	4											R Quiroz	7	2	3
		R Quiroz	3	6	6				R Quiroz	6	6
								2	D Kudla	3	2

• Main draw
• Qualifying draw