2019 Croatia Open Umag – Doubles
# 2019 Croatia Open Umag – Doubles

Robin Haase and Matwé Middelkoop were the defending champions, but Middelkoop chose to compete in Båstad instead.

Haase played alongside Philipp Oswald and successfully defended the title, defeating Oliver Marach and Jürgen Melzer in the final, 7–5, $6–7^{(2–7)},$ [14–12].

## Seeds

* Oliver Marach / Jürgen Melzer (final)
* Robin Haase / Philipp Oswald (champions)
* Denys Molchanov / Igor Zelenay (semifinals)
* Leonardo Mayer / Andrés Molteni (semifinals)

## 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

### Draw

| First round | First round | First round | First round | First round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals | Semifinals | Final | Final | Final | Final | Final |
| - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| 1 | O Marach J Melzer | 6 | $7^7$ | | | | | | | | | | | | | | | | |
| | P Sousa S Travaglia | 2 | $6^2$ | | 1 | O Marach J Melzer | 6 | 6 | | | | | | | | | | | |
| | A Behar N Lammons | 7 | 2 | [9] | | N Čačić D Lajović | 2 | 3 | | | | | | | | | | | |
| | N Čačić D Lajović | 5 | 6 | [11] | | | | | | 1 | O Marach J Melzer | $7^7$ | 7 | | | | | | |
| 4 | L Mayer A Molteni | 6 | 6 | | | | | | | 4 | L Mayer A Molteni | $6^5$ | 5 | | | | | | |
| | F Neis C-M Stebe | 4 | 1 | | 4 | L Mayer A Molteni | 7 | 7 | | | | | | | | | | | |
| | H Podlipnik Castillo T-S Weissborn | 2 | 2 | | WC | T Brkić A Pavić | 5 | 5 | | | | | | | | | | | |
| WC | T Brkić A Pavić | 6 | 6 | | | | | | | | | | | | 1 | O Marach J Melzer | 5 | $7^7$ | [12] |
| Alt | D Altmaier R Molleker | 5 | 3 | | | | | | | | | | | | 2 | R Haase P Oswald | 7 | $6^2$ | [14] |
| WC | A Šančić N Serdarušić | 7 | 6 | | WC | A Šančić N Serdarušić | 3 | 6 | [2] | | | | | | | | | | |
| | P Andújar G Granollers | 2 | 2 | | 3 | D Molchanov I Zelenay | 6 | 4 | [10] | | | | | | | | | | |
| 3 | D Molchanov I Zelenay | 6 | 6 | | | | | | | 3 | D Molchanov I Zelenay | 5 | 6 | [8] | | | | | |
| | T Fabbiano P Lorenzi | $7^7$ | 1 | [8] | | | | | | 2 | R Haase P Oswald | 7 | 1 | [10] | | | | | |
| | S Bolelli F Fognini | $6^5$ | 6 | [10] | | S Bolelli F Fognini | | | | | | | | | | | | | |
| | A Rublev A Vasilevski | 6 | 5 | [14] | 2 | R Haase P Oswald | w/o | | | | | | | | | | | | |
| 2 | R Haase P Oswald | 4 | 7 | [16] | | | | | | | | | | | | | | | |
