2018 Mutua Madrid Open – Men's doubles

Nikola Mektić and Alexander Peya defeated Bob and Mike Bryan in the final, 5–3, after Bob Bryan retired due to a hip injury. The Bryan brothers would have regained the ATP no. 1 doubles ranking from Kubot and Melo if they had won the title.^[1] This was their first retirement as a team in 1,407 matches.^[2]

Men's doubles
2018 Mutua Madrid Open
Champions	Nikola Mektić Alexander Peya
Runners-up	Bob Bryan Mike Bryan
Score	5–3, ret.

Main article: 2018 Mutua Madrid Open

Łukasz Kubot and Marcelo Melo were the defending champions, but lost to Juan Sebastián Cabal and Robert Farah in the quarterfinals.^[3]

Seeds

All seeds received a bye into the second round.

1. Łukasz Kubot / Marcelo Melo (quarterfinals)
2. Bob Bryan / Mike Bryan (final, retired)
3. Henri Kontinen / John Peers (second round)
4. Pierre-Hugues Herbert / Nicolas Mahut (semifinals)
5. Jamie Murray / Bruno Soares (quarterfinals)
6. Juan Sebastián Cabal / Robert Farah (semifinals)
7. Ivan Dodig / Rajeev Ram (second round)
8. Rohan Bopanna / Édouard Roger-Vasselin (second round)

Draw

Key

• Q = Qualifier
• WC = Wild card
• LL = Lucky loser
• Alt = Alternate
• ITF = ITF entry
• PR = Protected ranking
• SR = Special ranking
• SE = Special exempt
• JE = Junior exempt
• JR = Junior Accelerator Programme entrant
• CO = College Accelerator Programme entrant
• NG = Next Gen Accelerator Program entrant
• w/o = Walkover
• r = Retired
• d = Defaulted

Finals

	Semifinals							Final
	6	Juan Sebastián Cabal Robert Farah	3	6	[3]
		Nikola Mektić Alexander Peya	6	3	[10]
									Nikola Mektić Alexander Peya	5
								2	Bob Bryan Mike Bryan	3r
	4	Pierre-Hugues Herbert Nicolas Mahut	1	62
	2	Bob Bryan Mike Bryan	6	77

Top half

	First round							Second round							Quarterfinals							Semifinals
								1	Ł Kubot M Melo	7	712
		P Cuevas M Granollers	6	710					P Cuevas M Granollers	5	610
		JM del Potro D Thiem	3	68											1	Ł Kubot M Melo	4	6	[8]
		F Fognini D Schwartzman	3	6	[10]										6	JS Cabal R Farah	6	2	[10]
	WC	F Mergea D Nestor	6	1	[4]				F Fognini D Schwartzman	3	3
								6	JS Cabal R Farah	6	6
																						6	JS Cabal R Farah	3	6	[3]
																							N Mektić A Peya	6	3	[10]
								3	H Kontinen J Peers	4	4
		K Anderson M Mirnyi	4	6	[4]				N Mektić A Peya	6	6
		N Mektić A Peya	6	3	[10]											N Mektić A Peya	64	6	[10]
		R Klaasen M Venus	3	7	[10]											R Klaasen M Venus	77	3	[8]
		F López M López	6	5	[8]				R Klaasen M Venus	4	77	[10]
								8	R Bopanna É Roger-Vasselin	6	64	[5]

Bottom half

	First round							Second round							Quarterfinals							Semifinals
								7	I Dodig R Ram	1	3
		B McLachlan J-L Struff	6	77					B McLachlan J-L Struff	6	6
		J Isner J Sock	4	64												B McLachlan J-L Struff	2	3
		A Zverev M Zverev	77	64	[7]										4	P-H Herbert N Mahut	6	6
	WC	D Marrero F Verdasco	63	77	[10]			WC	D Marrero F Verdasco	1	4
								4	P-H Herbert N Mahut	6	6
																						4	P-H Herbert N Mahut	1	62
																						2	B Bryan M Bryan	6	77
								5	J Murray B Soares	6	3	[10]
		R Haase J-J Rojer	7	6					R Haase J-J Rojer	4	6	[6]
		S González A-u-H Qureshi	5	3											5	J Murray B Soares	4	77	[7]
		D Džumhur F Škugor	6	6											2	B Bryan M Bryan	6	64	[10]
		K Khachanov L Pouille	3	4					D Džumhur F Škugor	4	3
								2	B Bryan M Bryan	6	6