# 2017 Lisboa Belém Open – Singles

This was the first edition of the tournament.
Oscar Otte won the title after defeating Taro Daniel 4–6, 6–1, 6–3 in the final.

## Seeds

* Damir Džumhur (first round)
* Adam Pavlásek (first round)
* Taro Daniel (final)
* Santiago Giraldo (first round)
* Gastão Elias (first round)
* Roberto Carballés Baena (second round)
* Pedro Sousa (quarterfinals)
* Rubén Ramírez Hidalgo (first 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 | Final | Final | Final | Final | Final |
| | Oscar Otte | 7$^7$ | 6 | | | | | |
| | Attila Balázs | 6$^3$ | 2 | | | | | |
| | Attila Balázs | 6$^3$ | 2 | | Oscar Otte | 4 | 6 | 6 |
| | | | | 3 | Taro Daniel | 6 | 1 | 3 |
| 3 | Taro Daniel | 7$^7$ | 7$^7$ | 3 | Taro Daniel | 6 | 1 | 3 |
| | Gianluigi Quinzi | 6$^5$ | 6$^5$ | | | | | |

### 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 | Semifinals | Semifinals | Semifinals |
| 1 | D Džumhur | 6 | 3 | 4 | | | | | | | | | | | | |
| Q | D Muñoz de la Nava | 3 | 6 | 6 | Q | D Muñoz de la Nava | 7$^8$ | 3 | 6 | | | | | | | |
| | Petr Michnev | 6 | 3 | 3 | | M Donati | 6$^6$ | 6 | 4 | | | | | | | |
| | M Donati | 2 | 6 | 6 | | | | | | Q | D Muñoz de la Nava | 3 | 1 | | | |
| | O Otte | 7 | 4 | 6 | | | | | | | O Otte | 6 | 6 | | | |
| | R Ojeda Lara | 5 | 6 | 1 | | O Otte | 6 | 7$^7$ | | | | | | | | |
| WC | A Gaspar Murta | 7 | 2 | 2 | 6 | R Carballés Baena | 3 | 6$^1$ | | | | | | | | |
| 6 | R Carballés Baena | 5 | 6 | 6 | | | | | | | | | | O Otte | 7$^7$ | 6 |
| 4 | S Giraldo | 3 | 3 | | | | | | | | | | | A Balázs | 6$^3$ | 2 |
| | A Balázs | 6 | 6 | | | A Balázs | 6 | 6 | | | | | | | | |
| | P Gunneswaran | 5 | 4 | | | J Domingues | 4 | 2 | | | | | | | | |
| | J Domingues | 7 | 6 | | | | | | | | A Balázs | 7$^7$ | 6 | | | |
| WC | F Ferreira Silva | 6 | 6 | | | | | | | | J De Loore | 6$^5$ | 3 | | | |
| | G Clezar | 2 | 4 | | WC | F Ferreira Silva | 5 | 1 | | | | | | | | |
| | J De Loore | 7$^7$ | 6 | | | J De Loore | 7 | 6 | | | | | | | | |
| 5 | G Elias | 6$^2$ | 4 | | | | | | | | | | | | | |

### 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 |
| 8 | R Ramírez Hidalgo | 3 | 4 | | | | | | | | | | | | | | | |
| | G Sakharov | 6 | 6 | | | G Sakharov | 6 | 5 | 6 | | | | | | | | | |
| WC | G Oliveira | 1 | 6 | 7$^7$ | WC | G Oliveira | 3 | 7 | 4 | | | | | | | | | |
| Q | G Escobar | 6 | 3 | 6$^5$ | | | | | | | G Sakharov | 2 | 1 | | | | | |
| | C O'Connell | 4 | 2 | | | | | | | 3 | T Daniel | 6 | 6 | | | | | |
| Q | D Dima | 6 | 6 | | Q | D Dima | 6$^2$ | 3 | | | | | | | | | | |
| WC | João Monteiro | 3 | 6 | 2 | 3 | T Daniel | 7$^7$ | 6 | | | | | | | | | | |
| 3 | T Daniel | 6 | 4 | 6 | | | | | | | | | | | 3 | T Daniel | 7$^7$ | 7$^7$ |
| 7 | P Sousa | 6 | 6 | | | | | | | | | | | | | G Quinzi | 6$^5$ | 6$^5$ |
| | N Milojević | 1 | 1 | | 7 | P Sousa | 2 | 7$^7$ | 6 | | | | | | | | | |
| | F Coria | 6 | 6 | | | F Coria | 6 | 6$^5$ | 0 | | | | | | | | | |
| | D Popko | 3 | 2 | | | | | | | 7 | P Sousa | 6 | 6$^5$ | 2 | | | | |
| | L Harris | 6 | 7$^7$ | | | | | | | | G Quinzi | 3 | 7$^7$ | 6 | | | | |
| Q | H Hurkacz | 4 | 6$^5$ | | | L Harris | 1 | 4 | | | | | | | | | | |
| | G Quinzi | 6 | 6 | | | G Quinzi | 6 | 6 | | | | | | | | | | |
| 2 | A Pavlásek | 1 | 3 | | | | | | | | | | | | | | | |