# 2018 Internazionali di Tennis d'Abruzzo – Singles

Pedro Sousa was the defending champion but chose not to defend his title.
Gianluigi Quinzi won the title after defeating Casper Ruud 6–4, 6–1 in the final.

## Seeds

* Ruben Bemelmans (first round)
* Stefano Travaglia (first round)
* Gastão Elias (withdrew)
* Simone Bolelli (withdrew)
* Liam Broady (second round)
* Félix Auger-Aliassime (second round)
* Viktor Galović (second round)
* Renzo Olivo (second round)
* Salvatore Caruso (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 |
| | Tallon Griekspoor | 4 | 2 | | | | |
| WC | Gianluigi Quinzi | 6 | 6 | | | | |
| WC | Gianluigi Quinzi | 6 | 6 | WC | Gianluigi Quinzi | 6 | 6 |
| | | | | | Casper Ruud | 4 | 1 |
| | Casper Ruud | 7 | 6 | | Casper Ruud | 4 | 1 |
| Q | Antoine Hoang | 5 | 4 | | | | |

### 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 |
| 1 | R Bemelmans | 4 | 4 | | | | | | | | | | | | | | | |
| LL | K Coppejans | 6 | 6 | | LL | K Coppejans | 6 | 3 | 7 | | | | | | | | | |
| | A Collarini | 6 | 7$^8$ | | | A Collarini | 4 | 6 | 5 | | | | | | | | | |
| WC | GM Moroni | 2 | 6$^6$ | | | | | | | LL | K Coppejans | 0 | 1 | | | | | |
| | T Griekspoor | 6 | 3 | 6 | | | | | | | T Griekspoor | 6 | 6 | | | | | |
| | T Brkić | 2 | 6 | 3 | | T Griekspoor | 7$^9$ | 6 | | | | | | | | | | |
| | L Rosol | 7$^7$ | 3 | 4 | 8 | R Olivo | 6$^7$ | 4 | | | | | | | | | | |
| 8 | R Olivo | 6$^5$ | 6 | 6 | | | | | | | | | | | | T Griekspoor | 4 | 2 |
| Q | L Vanni | 6 | 6$^2$ | 6 | | | | | | | | | | | WC | G Quinzi | 6 | 6 |
| LL | M Viola | 2 | 7$^7$ | 4 | Q | L Vanni | 6$^2$ | 2 | | | | | | | | | | |
| WC | G Quinzi | 6 | 6 | | WC | G Quinzi | 7$^7$ | 6 | | | | | | | | | | |
| Q | J De Loore | 4 | 3 | | | | | | | WC | G Quinzi | 6 | 5 | 6 | | | | |
| LL | E Benchetrit | 6$^2$ | 6 | 4 | | | | | | WC | A Pellegrino | 4 | 7 | 2 | | | | |
| WC | A Pellegrino | 7$^7$ | 3 | 6 | WC | A Pellegrino | 6 | 2 | 6 | | | | | | | | | |
| LL | Zh Zhang | 1 | 4 | | 7 | V Galović | 3 | 6 | 3 | | | | | | | | | |
| 7 | V Galović | 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 |
| 6 | F Auger-Aliassime | 7 | 7$^7$ | | | | | | | | | | | | | | | |
| Q | D Kuzmanov | 5 | 6$^2$ | | 6 | F Auger-Aliassime | 5 | 0 | | | | | | | | | | |
| | C Ruud | 7 | 2 | 6 | | C Ruud | 7 | 6 | | | | | | | | | | |
| | A De Greef | 5 | 6 | 1 | | | | | | | C Ruud | 6$^6$ | 6 | 7 | | | | |
| | N Serdarušić | 3 | 2 | | | | | | | | M Donati | 7$^8$ | 4 | 5 | | | | |
| | M Bourgue | 6 | 6 | | | M Bourgue | 4 | 6 | 4 | | | | | | | | | |
| | M Donati | 6 | 6 | | | M Donati | 6 | 2 | 6 | | | | | | | | | |
| 9 | S Caruso | 0 | 3 | | | | | | | | | | | | | C Ruud | 7 | 6 |
| 5 | L Broady | 6 | 2 | 7 | | | | | | | | | | | Q | A Hoang | 5 | 4 |
| | Z Kolář | 0 | 6 | 5 | 5 | L Broady | 6$^8$ | 1 | | | | | | | | | | |
| WC | F Baldi | 6 | 2 | 6 | WC | F Baldi | 7$^{10}$ | 6 | | | | | | | | | | |
| | J Domingues | 2 | 6 | 3 | | | | | | WC | F Baldi | 4 | 5 | | | | | |
| | S Nagal | 4 | 2 | | | | | | | Q | A Hoang | 6 | 7 | | | | | |
| Q | A Hoang | 6 | 6 | | Q | A Hoang | 6 | 3 | 6 | | | | | | | | | |
| | G Oliveira | 6 | 6 | | | G Oliveira | 1 | 6 | 3 | | | | | | | | | |
| 2 | S Travaglia | 0 | 1 | | | | | | | | | | | | | | | |