Singles
2018 Las Vegas Challenger
Final
Champion	Thanasi Kokkinakis
Runner-up	Blaž Rola
Score	6–4, 6–4
Events
Singles Doubles
← 2017 · Las Vegas Challenger · 2019 →

Stefan Kozlov was the defending champion but lost in the first round to Kamil Majchrzak.

Thanasi Kokkinakis won the title after defeating Blaž Rola 6–4, 6–4 in the final.^[1]

	Semifinals							Final
		Thanasi Kokkinakis	6	6
	3	Casper Ruud	4	1
									Thanasi Kokkinakis	6	6
									Blaž Rola	4	4
		John-Patrick Smith	3	5
		Blaž Rola	6	7

	First round							Second round							Quarterfinals							Semifinals
	1	L Harris	6	6
		J Ward	4	4				1	L Harris	4	3
		T Kokkinakis	77	6					T Kokkinakis	6	6
	WC	A Cozbinov	65	1												T Kokkinakis	6	6
	Q	T Paul	6	77												D King	1	4
		K King	1	62				Q	T Paul	4	4
		D King	6	6					D King	6	6
	7	D Köpfer	4	4																			T Kokkinakis	6	6
	3	C Ruud	6	3	6																	3	C Ruud	4	1
		M Krueger	3	6	3			3	C Ruud	6	6
	LL	E King	6	6				LL	E King	3	2
		T Robredo	3	4											3	C Ruud	7	7
		K Majchrzak	6	6												K Majchrzak	5	5
		S Kozlov	0	2					K Majchrzak	2	6	6
		JC Aragone	2	6	63			8	M Arévalo	6	1	4
	8	M Arévalo	6	4	77

	First round							Second round							Quarterfinals							Semifinals
	LL	J Sels	77	5	4
		J-P Smith	64	7	6				J-P Smith	6	6
	WC	M Torpegaard	4	6	66				C İlkel	3	1
		C İlkel	6	3	78											J-P Smith	77	6
	Alt	J Choinski	3	4											4	J Jung	63	3
	Q	R Ortega Olmedo	6	6				Q	R Ortega Olmedo	4	4
	LL	A Sarkissian	65	4				4	J Jung	6	6
	4	J Jung	77	6																			J-P Smith	3	5
	5	N Rubin	3	6	3																		B Rola	6	7
		B Rola	6	1	6				B Rola	6	6
	Q	T-S Kwiatkowski	6	6				Q	T-S Kwiatkowski	3	4
	WC	Evan Song	4	4												B Rola	6	77
		N Serdarušić	64	4											Q	M Bourgue	4	61
	Q	M Bourgue	77	6				Q	M Bourgue	6	0	6
	WC	J. J. Wolf	3	3				2	A Menéndez Maceiras	4	6	3
	2	A Menéndez Maceiras	6	6

• Main draw
• Qualifying draw