Men's singles
2018 ASB Classic
Final
Champion	Roberto Bautista Agut
Runner-up	Juan Martín del Potro
Score	6–1, 4–6, 7–5
Details
Draw	28 (4 Q / 3 WC )
Seeds	8
Events
Singles men women Doubles men women
← 2017 · ATP Auckland Open · 2019 →

Jack Sock was the defending champion, but lost in the second round to Peter Gojowczyk.

Roberto Bautista Agut won the title, defeating Juan Martín del Potro in the final, 6–1, 4–6, 7–5.

The top four seeds received a bye into the second round.

	Semifinals							Final
		Robin Haase	79	63	65
	5	Roberto Bautista Agut	67	77	77
								5	Roberto Bautista Agut	6	4	7
								2	Juan Martín del Potro	1	6	5
	7	David Ferrer	4	4
	2	Juan Martín del Potro	6	6

	First round							Second round							Quarterfinals							Semifinals
								1	J Sock	3	3
	Q	T Smyczek	3	6	3				P Gojowczyk	6	6
		P Gojowczyk	6	4	6											P Gojowczyk	4	4
		R Haase	0	78	6											R Haase	6	6
	Q	C Ruud	6	66	3				R Haase	77	6
	WC	S Tsitsipas	3	77	3			LL	L Lacko	64	3
	LL	L Lacko	6	65	6																		R Haase	79	63	65
																						5	R Bautista Agut	67	77	77
								3	S Querrey	4	712	65
		J Veselý	3	6	79				J Veselý	6	610	77
	Q	R Albot	6	1	67											J Veselý	61	2
		S Johnson	7	77											5	R Bautista Agut	77	6
	LL	L Caruana	5	64					S Johnson	6	2	1
	WC	M Venus	2	1				5	R Bautista Agut	2	6	6
	5	R Bautista Agut	6	6

	First round							Second round							Quarterfinals							Semifinals
	7	D Ferrer	79	6
	WC	Y Wu	67	4				7	D Ferrer	6	6
		D Young	710	4	2				J Sousa	2	2
		J Sousa	68	6	6										7	D Ferrer	6	6
		H Chung	6	5	6											H Chung	3	2
	LL	T Sandgren	3	7	3				H Chung	77	5	6
								4	J Isner	63	7	2
																						7	D Ferrer	4	4
	6	P Cuevas	6	6																		2	JM del Potro	6	6
	LL	T Daniel	3	2				6	P Cuevas	2	64
		Y Sugita	1	6	4				K Khachanov	6	77
		K Khachanov	6	3	6											K Khachanov	64	3
		D Shapovalov	6	6											2	JM del Potro	77	6
	Q	R Dutra Silva	3	2					D Shapovalov	2	4
								2	JM del Potro	6	6

	First round							Qualifying competition
	1	Radu Albot	7	6
		Brydan Klein	5	4
								1	Radu Albot	5	6	6
								5	Taro Daniel	7	3	4
	WC	Ajeet Rai	1	2
	5	Taro Daniel	6	6

	First round							Qualifying competition
	2	Lukáš Lacko	6	7
		Rubin Statham	1	5
								2	Lukáš Lacko	5	4
								6	Rogério Dutra Silva	7	6
		Sam Barry	2	6	5
	6	Rogério Dutra Silva	6	3	7

	First round							Qualifying competition
	3	Tennys Sandgren	77	77
		Michał Przysiężny	64	64
								3	Tennys Sandgren	78	65	4
								8	Casper Ruud	66	77	6
		Stéphane Robert	3	77	63
	8	Casper Ruud	6	63	77

	First round							Qualifying competition
	4	Blaž Kavčič	3	4
		Liam Caruana	6	6
									Liam Caruana	4	2
								7	Tim Smyczek	6	6
	WC	Finn Reynolds	1	2
	7	Tim Smyczek	6	6

• Main Draw
• Qualifying Draw