# 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. This was their first retirement as a team in 1,407 matches.
Łukasz Kubot and Marcelo Melo were the defending champions, but lost to Juan Sebastián Cabal and Robert Farah in the quarterfinals.

## Seeds

All seeds received a bye into the second round.
* Łukasz Kubot / Marcelo Melo (quarterfinals)
* Bob Bryan / Mike Bryan (final, retired)
* Henri Kontinen / John Peers (second round)
* Pierre-Hugues Herbert / Nicolas Mahut (semifinals)
* Jamie Murray / Bruno Soares (quarterfinals)
* Juan Sebastián Cabal / Robert Farah (semifinals)
* Ivan Dodig / Rajeev Ram (second round)
* Rohan Bopanna / Édouard Roger-Vasselin (second round)

## Draw
### Key

* Q = Qualifier
* WC = Wild card
* LL = Lucky loser
* Alt = Alternate
* SE = Special exempt
* PR = Protected ranking
* ITF = ITF entry
* JE = Junior exempt
* w/o = Walkover
* r = Retired
* d = Defaulted
* SR = Special ranking

### Finals

| Semifinals | Semifinals | Semifinals | Semifinals | Semifinals | Final | Final | Final |
| 6 | Juan Sebastián Cabal Robert Farah | 3 | 6 | [3] | | | |
| | Nikola Mektić Alexander Peya | 6 | 3 | [10] | | | |
| | Nikola Mektić Alexander Peya | 6 | 3 | [10] | | Nikola Mektić Alexander Peya | 5 |
| | | | | | 2 | Bob Bryan Mike Bryan | 3$^r$ |
| 4 | Pierre-Hugues Herbert Nicolas Mahut | 1 | 6$^2$ | | 2 | Bob Bryan Mike Bryan | 3$^r$ |
| 2 | Bob Bryan Mike Bryan | 6 | 7$^7$ | | | | |

### Top half

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals | Semifinals |
| | | | | | 1 | Ł Kubot M Melo | 7 | 7$^{12}$ | | | | | | | | | | | |
| | P Cuevas M Granollers | 6 | 7$^{10}$ | | | P Cuevas M Granollers | 5 | 6$^{10}$ | | | | | | | | | | | |
| | JM del Potro D Thiem | 3 | 6$^8$ | | | | | | | 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 | 6$^4$ | 6 | [10] | | | | | |
| | R Klaasen M Venus | 3 | 7 | [10] | | | | | | | R Klaasen M Venus | 7$^7$ | 3 | [8] | | | | | |
| | F López M López | 6 | 5 | [8] | | R Klaasen M Venus | 4 | 7$^7$ | [10] | | | | | | | | | | |
| | | | | | 8 | R Bopanna É Roger-Vasselin | 6 | 6$^4$ | [5] | | | | | | | | | | |

### Bottom half

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals |
| | | | | | 7 | I Dodig R Ram | 1 | 3 | | | | | | | | | | |
| | B McLachlan J-L Struff | 6 | 7$^7$ | | | B McLachlan J-L Struff | 6 | 6 | | | | | | | | | | |
| | J Isner J Sock | 4 | 6$^4$ | | | | | | | | B McLachlan J-L Struff | 2 | 3 | | | | | |
| | A Zverev M Zverev | 7$^7$ | 6$^4$ | [7] | | | | | | 4 | P-H Herbert N Mahut | 6 | 6 | | | | | |
| WC | D Marrero F Verdasco | 6$^3$ | 7$^7$ | [10] | WC | D Marrero F Verdasco | 1 | 4 | | | | | | | | | | |
| | | | | | 4 | P-H Herbert N Mahut | 6 | 6 | | | | | | | | | | |
| | | | | | | | | | | | | | | | 4 | P-H Herbert N Mahut | 1 | 6$^2$ |
| | | | | | | | | | | | | | | | 2 | B Bryan M Bryan | 6 | 7$^7$ |
| | | | | | 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 | 7$^7$ | [7] | | | | |
| | D Džumhur F Škugor | 6 | 6 | | | | | | | 2 | B Bryan M Bryan | 6 | 6$^4$ | [10] | | | | |
| | K Khachanov L Pouille | 3 | 4 | | | D Džumhur F Škugor | 4 | 3 | | | | | | | | | | |
| | | | | | 2 | B Bryan M Bryan | 6 | 6 | | | | | | | | | | |