2018 Tiburon Challenger – Doubles
# 2018 Tiburon Challenger – Doubles

André Göransson and Florian Lakat were the defending champions but lost in the quarterfinals to Gerard Granollers and Pedro Martínez.

Hans Hach Verdugo and Luke Saville won the title after defeating Granollers and Martínez 6–3, 6–2 in the final.

## Seeds

* Marcelo Arévalo / Roberto Maytín (quarterfinals)
* Sanchai Ratiwatana / Christopher Rungkat (first round)
* Peter Polansky / Jackson Withrow (first round)
* Marcel Granollers / Mark Vervoort (quarterfinals)

## 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

| First round | First round | First round | First round | First round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals | Final | Final | Final | Final |
| - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| 1 | M Arévalo R Maytín | 6 | 6 | | | | | | | | | | | | | | |
| | B Fratangelo R Galloway | 3 | 0 | | 1 | M Arévalo R Maytín | 6 | $6^3$ | [6] | | | | | | | | |
| | R Roelofse N Rubin | 3 | 0 | | Q | H Hach Verdugo L Saville | 2 | $7^7$ | [10] | | | | | | | | |
| Q | H Hach Verdugo L Saville | 6 | 6 | | | | | | | Q | H Hach Verdugo L Saville | 6 | 6 | | | | |
| 4 | M Granollers M Vervoort | 4 | 6 | [10] | | | | | | | A Lawson H Reese | 4 | 4 | | | | |
| | T Matsui F Nielsen | 6 | 3 | [4] | 4 | M Granollers M Vervoort | 6 | $6^{10}$ | [8] | | | | | | | | |
| | A Lawson H Reese | 6 | 6 | | | A Lawson H Reese | 4 | $7^{12}$ | [10] | | | | | | | | |
| | M Reid J Thompson | 4 | 4 | | | | | | | | | | | Q | H Hach Verdugo L Saville | 6 | 6 |
| | G Granollers P Martínez | 6 | 6 | | | | | | | | | | | | G Granollers P Martínez | 3 | 2 |
| WC | C Eubanks M Krueger | 4 | 4 | | | G Granollers P Martínez | 6 | 6 | | | | | | | | | |
| WC | A Göransson F Lakat | 4 | 6 | [10] | WC | A Göransson F Lakat | 4 | 4 | | | | | | | | | |
| 3 | P Polansky J Withrow | 6 | 3 | [4] | | | | | | | G Granollers P Martínez | $7^7$ | 7 | | | | |
| | R Gonzales N Lammons | 4 | 6 | [4] | | | | | | | E King N Pasha | $6^4$ | 5 | | | | |
| | E King N Pasha | 6 | 2 | [10] | | E King N Pasha | 6 | 6 | | | | | | | | | |
| WC | H Johnson Y Johnson | 6 | 3 | [10] | WC | H Johnson Y Johnson | 4 | 2 | | | | | | | | | |
| 2 | Sa Ratiwatana C Rungkat | 1 | 6 | [8] | | | | | | | | | | | | | |
