Doubles
2018 Kunal Patel San Francisco Open
Champions	Marcelo Arévalo Roberto Maytín
Runners-up	Luke Bambridge Joe Salisbury
Score	6–3, 6–7(5–7), [10–7]

Matt Reid and John-Patrick Smith were the defending champions but chose not to defend their title.

Marcelo Arévalo and Roberto Maytín won the title after defeating Luke Bambridge and Joe Salisbury 6–3, 6–7^(5–7), [10–7] in the final.

Seeds

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
• SR = Special ranking

	First round							Quarterfinals							Semifinals							Final
	1	A Behar M González	77	7
		H Hach Verdugo A Pavić	62	5				1	A Behar M González	7	6
		F Agamenone LD Martínez	64	6	[6]				R Galloway M Krueger	5	4
		R Galloway M Krueger	77	4	[10]										1	A Behar M González	1	63
	4	M Arévalo R Maytín	6	5	[10]										4	M Arévalo R Maytín	6	77
	WC	Nicholas Brunner Andre Dome	3	7	[5]			4	M Arévalo R Maytín	w/o
	LL	JC Aragone C Eubanks	77	2	[10]			LL	JC Aragone C Eubanks
	Q	Í Cervantes JP Fruttero	65	6	[6]																	4	M Arévalo R Maytín	6	65	[10]
	WC	Alex Brenner N Chappell	2	1																		2	L Bambridge J Salisbury	3	77	[7]
		D Novikov G Oliveira	6	6					D Novikov G Oliveira	6	1	[9]
	WC	A Göransson F Lakat	4	6	[7]			3	J Nedunchezhiyan C Rungkat	4	6	[11]
	3	J Nedunchezhiyan C Rungkat	6	4	[10]										3	J Nedunchezhiyan C Rungkat	2	2
		B Saraiva S Verbeek	6	6											2	L Bambridge J Salisbury	6	6
		A Bublik M Mmoh	0	2					B Saraiva S Verbeek	3	4
		R Gonzales H Reese	7	63	[8]			2	L Bambridge J Salisbury	6	6
	2	L Bambridge J Salisbury	5	77	[10]

References

• Main Draw
• Qualifying Draw