Men's singles
2018 Brisbane International
Champion	Nick Kyrgios
Runner-up	Ryan Harrison
Score	6–4, 6–2
Draw	28 (4 Q / 3 WC )
Seeds	8

Grigor Dimitrov was the defending champion, but lost in the semifinals to Nick Kyrgios.

Kyrgios went on to win the title, defeating Ryan Harrison in the final, 6–4, 6–2.

Seeds

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

Draw

Finals

	Semifinals							Final
	1	Grigor Dimitrov	6	1	4
	3	Nick Kyrgios	3	6	6
								3	Nick Kyrgios	6	6
									Ryan Harrison	4	2
	WC	Alex de Minaur	6	65	4
		Ryan Harrison	4	77	6

Top half

	First round							Second round							Quarterfinals							Semifinals
								1	G Dimitrov	4	710	6
	Q	P Polansky	64	0				WC	J Millman	6	68	3
	WC	J Millman	77	6											1	G Dimitrov	6	63	6
		D Shapovalov	77	64	4											K Edmund	3	77	4
		K Edmund	65	77	6				K Edmund	77	5	6
		H Chung	6	77					H Chung	63	7	4
	5	G Müller	3	61																		1	G Dimitrov	6	1	4
																						3	N Kyrgios	3	6	6
								3	N Kyrgios	63	77	6
		F Tiafoe	3	2					M Ebden	77	65	2
		M Ebden	6	6											3	N Kyrgios	1	6	6
	Q	E Escobedo	3	4												A Dolgopolov	6	3	4
		H Zeballos	6	6					H Zeballos	1	2
		A Dolgopolov	6	77					A Dolgopolov	6	6
	6	D Schwartzman	4	63

Bottom half

	First round							Second round							Quarterfinals							Semifinals
	8	M Zverev	6	7
	Q	J-P Smith	4	5				8	M Zverev	2	7	4
		F Delbonis	3	4				Q	M Mmoh	6	5	6
	Q	M Mmoh	6	6											Q	M Mmoh	4	0
		S Johnson	67	4											WC	A de Minaur	6	6
	WC	A de Minaur	79	6				WC	A de Minaur	6	6
								4	M Raonic	4	4
																						WC	A de Minaur	6	65	4
	7	D Džumhur	77	3	2																		R Harrison	4	77	6
		D Istomin	64	6	6				D Istomin	77	6
		J Donaldson	6	6					J Donaldson	65	2
	WC	J Thompson	2	4												D Istomin	66	2r
		R Harrison	6	3	6											R Harrison	78	4
		L Mayer	4	6	2				R Harrison	65	6	6
								LL	Y Hanfmann	77	4	2

Qualifying

Qualifying draw

First qualifier

	First round							Qualifying competition
	1	Alexander Bublik	4	4
	Alt	John-Patrick Smith	6	6
								Alt	John-Patrick Smith	6	3	77
									Viktor Galović	4	6	62
		Viktor Galović	4	6	6
	7	Renzo Olivo	6	3	2

Second qualifier

	First round							Qualifying competition
	2	Yannick Hanfmann	6	79
	WC	Sam Groth	4	67
								2	Yannick Hanfmann	1	6	3
								5	Peter Polansky	6	3	6
		Filip Peliwo	2	2
	5	Peter Polansky	6	6

Third qualifier

	First round							Qualifying competition
	3	Ernesto Escobedo	6	4	6
	WC	James Duckworth	2	6	4
								3	Ernesto Escobedo	6	77
								8	Jozef Kovalík	2	64
		Denis Kudla	65	4
	8	Jozef Kovalík	77	6

Fourth qualifier

	First round							Qualifying competition
	4	Quentin Halys	4	4
		Michael Mmoh	6	6
									Michael Mmoh	6	6
								6	Sebastian Ofner	4	3
		Marcelo Arévalo	6	63	2
	6	Sebastian Ofner	2	77	6

References

• Main Draw
• Qualifying Draw