# 2017 Guzzini Challenger – Singles

Illya Marchenko was the defending champion but chose not to defend his title.
Viktor Galović won the title after defeating Mirza Bašić 7–6$^{(7–3)}$, 6–4 in the final.

## Seeds

* Luca Vanni (semifinals)
* Quentin Halys (quarterfinals)
* Adrián Menéndez Maceiras (quarterfinals)
* Kenny de Schepper (second round)
* Mirza Bašić (final)
* Egor Gerasimov (second round)
* Salvatore Caruso (semifinals)
* Aldin Šetkić (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 | Semifinals | Final | Final | Final | Final |
| 1 | Luca Vanni | 7$^7$ | 6$^4$ | 6$^2$ | | | | |
| 5 | Mirza Bašić | 6$^3$ | 7$^7$ | 7$^7$ | | | | |
| 5 | Mirza Bašić | 6$^3$ | 7$^7$ | 7$^7$ | 5 | Mirza Bašić | 6$^3$ | 4 |
| | | | | | Q | Viktor Galović | 7$^7$ | 6 |
| 7 | Salvatore Caruso | 3 | 3 | | Q | Viktor Galović | 7$^7$ | 6 |
| Q | Viktor Galović | 6 | 6 | | | | | |

### 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 | L Vanni | 3 | 6 | 6 | | | | | | | | | | | | | | | |
| | M Safwat | 6 | 3 | 4 | 1 | L Vanni | 6 | 2 | 6 | | | | | | | | | | |
| Q | F Nielsen | 4 | 7$^7$ | 6 | Q | F Nielsen | 2 | 6 | 2 | | | | | | | | | | |
| | A Velotti | 6 | 6$^3$ | 3 | | | | | | 1 | L Vanni | 7$^7$ | 6 | | | | | | |
| | D Petrović | 1 | 6$^2$ | | | | | | | | M Moraing | 6$^3$ | 3 | | | | | | |
| | M Moraing | 6 | 7$^7$ | | | M Moraing | 3 | 7$^7$ | 7$^9$ | | | | | | | | | | |
| WC | G Mager | 6$^3$ | 4 | | 6 | E Gerasimov | 6 | 6$^3$ | 6$^7$ | | | | | | | | | | |
| 6 | E Gerasimov | 7$^7$ | 6 | | | | | | | | | | | | 1 | L Vanni | 7$^7$ | 6$^4$ | 6$^2$ |
| 3 | A Menéndez Maceiras | 6 | 7$^7$ | | | | | | | | | | | | 5 | M Bašić | 6$^3$ | 7$^7$ | 7$^7$ |
| Q | E Karlovskiy | 2 | 6$^4$ | | 3 | A Menéndez Maceiras | 5 | 7 | 6 | | | | | | | | | | |
| | A Bega | 7 | 6 | | | A Bega | 7 | 5 | 4 | | | | | | | | | | |
| | E Leshem | 5 | 2 | | | | | | | 3 | A Menéndez Maceiras | 6 | 3 | 3 | | | | | |
| | M Hamou | 6 | 6$^3$ | 7$^8$ | | | | | | 5 | M Bašić | 3 | 6 | 6 | | | | | |
| | P Krstin | 2 | 7$^7$ | 6$^6$ | | M Hamou | 4 | 2 | | | | | | | | | | | |
| WC | J Ocleppo | 6 | 3 | 1 | 5 | M Bašić | 6 | 6 | | | | | | | | | | | |
| 5 | M Bašić | 3 | 6 | 6 | | | | | | | | | | | | | | | |

### 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 | S Caruso | 7$^7$ | 6 | | | | | | | | | | | | | | | |
| | Petr Michnev | 6$^5$ | 2 | | 7 | S Caruso | 6$^5$ | 6 | 7 | | | | | | | | | |
| | A Kudryavtsev | 6 | 2 | 3 | | R Ramanathan | 7$^7$ | 3 | 5 | | | | | | | | | |
| | R Ramanathan | 4 | 6 | 6 | | | | | | 7 | S Caruso | 6 | 6 | | | | | |
| | A Arnaboldi | 7$^7$ | 6 | | | | | | | | A Arnaboldi | 3 | 1 | | | | | |
| | M İlhan | 6$^4$ | 2 | | | A Arnaboldi | 7$^7$ | 6 | | | | | | | | | | |
| | J Eysseric | 3 | 6 | 1 | 4 | K de Schepper | 6$^5$ | 4 | | | | | | | | | | |
| 4 | K de Schepper | 6 | 3 | 6 | | | | | | | | | | | 7 | S Caruso | 3 | 3 |
| 8 | A Šetkić | 3 | 6$^1$ | | | | | | | | | | | | Q | V Galović | 6 | 6 |
| WC | A Vavassori | 6 | 7$^7$ | | WC | A Vavassori | 1 | 3 | | | | | | | | | | |
| WC | Edoardo Eremin | 7$^9$ | 3 | 2 | Q | V Galović | 6 | 6 | | | | | | | | | | |
| Q | V Galović | 6$^7$ | 6 | 6 | | | | | | Q | V Galović | 6$^5$ | 7 | 6 | | | | |
| | Y Mertens | 3 | 6 | 7$^7$ | | | | | | 2 | Q Halys | 7$^7$ | 5 | 4 | | | | |
| | D Popko | 6 | 3 | 6$^0$ | | Y Mertens | 1 | 4 | | | | | | | | | | |
| Q | A Çelikbilek | 1 | 6$^2$ | | 2 | Q Halys | 6 | 6 | | | | | | | | | | |
| 2 | Q Halys | 6 | 7$^7$ | | | | | | | | | | | | | | | |