Novak Djokovic defeated Roger Federer in the final, 6–4, 6–4 to win the men's singles tennis title at the 2018 Cincinnati Masters.^[1] With this win, he became the first player to complete the career Golden Masters (winning all nine ATP Masters 1000 tournaments over the course of a career) in singles.

Grigor Dimitrov was the defending champion, but lost to Djokovic in the third round.

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

Click on the seed number of a player to go to their draw section.

	Quarterfinals							Semifinals							Final
		Milos Raonic	5	6	3
	10	Novak Djokovic	7	4	6
								10	Novak Djokovic	6	3	6
								7	Marin Čilić	4	6	3
	13	Pablo Carreño Busta	67	4
	7	Marin Čilić	79	6
															10	Novak Djokovic	6	6
															2	Roger Federer	4	4
	11	David Goffin	77	77
	4	Juan Martín del Potro	65	64
								11	David Goffin	63	1r
								2	Roger Federer	77	1
	WC	Stan Wawrinka	77	66	2
	2	Roger Federer	62	78	6

	First round							Second round							Third round							Quarterfinals
								LL	M Jaziri	3	5
	Q	D Lajović	3	3					M Raonic	6	7
		M Raonic	6	6												M Raonic	78	6
	WC	F Tiafoe	66	6	5											D Shapovalov	66	4
		D Shapovalov	78	3	7				D Shapovalov	6	7
	WC	M McDonald	3	2				14	K Edmund	4	5
	14	K Edmund	6	6																			M Raonic	5	6	3
	10	N Djokovic	6	77																		10	N Djokovic	7	4	6
		S Johnson	4	64				10	N Djokovic	4	6	6
		A Mannarino	67	6	79				A Mannarino	6	2	1
		M Cecchinato	79	2	67										10	N Djokovic	2	6	6
		D Džumhur	3	4											5	G Dimitrov	6	3	4
		M Zverev	6	6					M Zverev	65	5
								5	G Dimitrov	77	7

	First round							Second round							Third round							Quarterfinals
								3	A Zverev	7	4	5
		R Haase	4	6	6				R Haase	5	6	7
		F Krajinović	6	2	3											R Haase	4	2
		M Marterer	61	4											13	P Carreño Busta	6	6
	Q	B Klahn	77	6				Q	B Klahn	4	4
		R Gasquet	3	6	3			13	P Carreño Busta	6	6
	13	P Carreño Busta	6	2	6																	13	P Carreño Busta	67	4
	9	J Isner	4	77	65																	7	M Čilić	79	6
		S Querrey	6	65	77				S Querrey	5	4
		K Khachanov	2	6	6				K Khachanov	7	6
		A Ramos Viñolas	6	3	2											K Khachanov	65	6	4
		P Kohlschreiber	4	2											7	M Čilić	77	3	6
	Q	M Copil	6	6				Q	M Copil	77	4	4
								7	M Čilić	64	6	6

	First round							Second round							Third round							Quarterfinals
								6	K Anderson	78	6
		J Chardy	6	6					J Chardy	66	2
		F Verdasco	1	2											6	K Anderson	2	4
		D Ferrer	2	2											11	D Goffin	6	6
		B Paire	6	6					B Paire	7	4	2
		S Tsitsipas	5	3				11	D Goffin	5	6	6
	11	D Goffin	7	6																		11	D Goffin	77	77
	15	N Kyrgios	62	7	711																	4	JM del Potro	65	64
	Q	D Kudla	77	5	69			15	N Kyrgios	77	0	6
		B Ćorić	6	6					B Ćorić	61	6	3
	Q	D Medvedev	2	3											15	N Kyrgios	64	78	2
		H Chung	2	6	6										4	JM del Potro	77	66	6
		J Sock	6	1	2				H Chung	2	3
								4	JM del Potro	6	6

	First round							Second round							Third round							Quarterfinals
								LL	G García López	77	4	5
		M Fucsovics	4	6	78				M Fucsovics	65	6	7
	Q	H Hurkacz	6	3	66											M Fucsovics	4	3
		K Nishikori	7	6											WC	S Wawrinka	6	6
		A Rublev	5	3					K Nishikori	4	4
	WC	S Wawrinka	6	4	6			WC	S Wawrinka	6	6
	12	D Schwartzman	2	6	3																	WC	S Wawrinka	77	66	2
	16	L Pouille	6	1	6																	2	R Federer	62	78	6
	WC	A Murray	1	6	4			16	L Pouille	67	4
	Q	M Mmoh	4	6	4				L Mayer	79	6
		L Mayer	6	1	6											L Mayer	1	66
		P Gojowczyk	2	6	7										2	R Federer	6	78
		J Sousa	6	4	5				P Gojowczyk	4	4
								2	R Federer	6	6

	First round							Qualifying competition
	1	John Millman	5r
		Tim Smyczek	5
									Tim Smyczek	1	6	2
									Michael Mmoh	6	2	6
		Michael Mmoh	6	6
	13	Mirza Bašić	3	3

	First round							Qualifying competition
	2	Ryan Harrison	3	3
		Hubert Hurkacz	6	6
									Hubert Hurkacz	77	77
									Ivo Karlović	63	64
		Ivo Karlović	77	6
	12	Taro Daniel	65	3

	First round							Qualifying competition
	3	Malek Jaziri	62	6	77
	WC	Bjorn Fratangelo	77	3	62
								3	Malek Jaziri	3	1
								11	Denis Kudla	6	6
		Evgeny Donskoy	2	4
	11	Denis Kudla	6	6

	First round							Qualifying competition
	4	Tennys Sandgren	4	61
		Bradley Klahn	6	77
									Bradley Klahn	77	77
								9	Guillermo García López	62	61
		Ričardas Berankis	4	3
	9	Guillermo García López	6	6

	First round							Qualifying competition
	5	Dušan Lajović	77	6
	WC	Mitchell Krueger	63	4
								5	Dušan Lajović	2	6	6
									Marcos Baghdatis	6	2	3
		Marcos Baghdatis	77	6
	8	Feliciano López	65	3

	First round							Qualifying competition
	6	Cameron Norrie	4	6	3
		Marius Copil	6	3	6
									Marius Copil	6	77
								WC	J. J. Wolf	4	62
	WC	J. J. Wolf	78	77
	14	Jozef Kovalík	66	65

	First round							Qualifying competition
	7	Daniil Medvedev	2	7	6
	WC	Christian Harrison	6	5	4
								7	Daniil Medvedev	4	77	6
								PR	Yoshihito Nishioka	6	61	2
	PR	Yoshihito Nishioka	61	6	6
	10	Yūichi Sugita	77	3	3

• Main draw
• Qualifying draw