# 2017 Banja Luka Challenger – Singles

Adam Pavlásek was the defending champion but chose not to defend his title.
Maximilian Marterer won the title after defeating Carlos Taberner 6–1, 6–2 in the final.

## Seeds

* Roberto Carballés Baena (second round)
* Guillermo García López (withdrew)
* Maximilian Marterer (champion)
* Nikola Milojević (quarterfinals)
* Ricardo Ojeda Lara (second round)
* Lorenzo Giustino (first round)
* Jaume Munar (second round, withdrew)
* Václav Šafránek (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 |
| | Andrea Arnaboldi | 6$^4$ | 0 | | | | |
| 3 | Maximilian Marterer | 7$^7$ | 6 | | | | |
| 3 | Maximilian Marterer | 7$^7$ | 6 | 3 | Maximilian Marterer | 6 | 6 |
| | | | | | Carlos Taberner | 1 | 2 |
| | Carlos Taberner | 6 | 6 | | Carlos Taberner | 1 | 2 |
| Q | Pol Toledo Bagué | 3 | 3 | | | | |

### Top half

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 1 | R Carballés Baena | 7 | 6 | | | | | | | | | | | | | |
| LL | A Haider-Maurer | 5 | 3 | | 1 | R Carballés Baena | 2 | 3 | | | | | | | | |
| | A Arnaboldi | 5 | 6 | 6 | | A Arnaboldi | 6 | 6 | | | | | | | | |
| | P Krstin | 7 | 1 | 3 | | | | | | A Arnaboldi | 6 | 6 | | | | |
| | B Rola | 3 | 1 | | | | | | | F Auger-Aliassime | 3 | 4 | | | | |
| | F Auger-Aliassime | 6 | 6 | | | F Auger-Aliassime | 7 | 6 | | | | | | | | |
| WC | D Gimeno Traver | 6 | 7$^8$ | | WC | D Gimeno Traver | 5 | 3 | | | | | | | | |
| 8 | V Šafránek | 3 | 6$^6$ | | | | | | | | | | | A Arnaboldi | 6$^4$ | 0 |
| 3 | M Marterer | 6 | 6 | | | | | | | | | | 3 | M Marterer | 7$^7$ | 6 |
| | K Coppejans | 3 | 1 | | 3 | M Marterer | 6 | 6 | | | | | | | | |
| | D Petrović | 6 | 7 | | | D Petrović | 2 | 1 | | | | | | | | |
| | I Gakhov | 3 | 5 | | | | | | 3 | M Marterer | 6 | 6 | | | | |
| SE | K Krawietz | 2 | 0 | | | | | | | Z Kolář | 2 | 4 | | | | |
| | Z Kolář | 6 | 6 | | | Z Kolář | 6 | 7 | | | | | | | | |
| | T Brkić | 6 | 6 | | | T Brkić | 3 | 5 | | | | | | | | |
| 6 | L Giustino | 4 | 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 |
| 5 | R Ojeda Lara | 2 | 6 | 7 | | | | | | | | | | | | | | |
| | Petr Michnev | 6 | 0 | 5 | 5 | R Ojeda Lara | 7$^7$ | 6$^1$ | 2 | | | | | | | | | |
| | M Kecmanović | 4 | 3 | | | C Taberner | 6$^1$ | 7$^7$ | 6 | | | | | | | | | |
| | C Taberner | 6 | 6 | | | | | | | | C Taberner | 7 | 3 | 6 | | | | |
| Alt | A Müller | 6 | 6 | | | | | | | 4 | N Milojević | 5 | 6 | 2 | | | | |
| WC | Kento Tagashira | 0 | 2 | | Alt | A Müller | 6$^6$ | 0 | | | | | | | | | | |
| Alt | A Ghem | 3 | 6 | 1 | 4 | N Milojević | 7$^8$ | 6 | | | | | | | | | | |
| 4 | N Milojević | 6 | 2 | 6 | | | | | | | | | | | | C Taberner | 6 | 6 |
| 7 | J Munar | 6 | 6 | | | | | | | | | | | | Q | P Toledo Bagué | 3 | 3 |
| LL | Erik Crepaldi | 1 | 4 | | 7 | J Munar | | | | | | | | | | | | |
| Q | F Horanský | 6 | 6 | | Q | F Horanský | w/o | | | | | | | | | | | |
| WC | Franjo Raspudić | 2 | 3 | | | | | | | Q | F Horanský | 6 | 5 | 3 | | | | |
| Q | P Nagy | 4 | 6 | 7$^8$ | | | | | | Q | P Toledo Bagué | 4 | 7 | 6 | | | | |
| WC | N Serdarušić | 6 | 4 | 6$^6$ | Q | P Nagy | 1 | 4 | | | | | | | | | | |
| Q | P Toledo Bagué | 5 | 7 | 6 | Q | P Toledo Bagué | 6 | 6 | | | | | | | | | | |
| Q | L Miedler | 7 | 5 | 4 | | | | | | | | | | | | | | |