# 2018 Città di Como Challenger – Singles

Pedro Sousa was the defending champion but lost in the first round to Cristian Garín.
Salvatore Caruso won the title after defeating Garín 7–5, 6–4 in the final.

## Seeds

* Martin Kližan (quarterfinals)
* Hugo Dellien (first round)
* Pedro Sousa (first round)
* Thiago Monteiro (first round)
* Juan Ignacio Londero (quarterfinals)
* Stéphane Robert (first round)
* Gastão Elias (first round)
* Rogério Dutra Silva (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 | Final | Final | Final |
| Viktor Galović | 4 | 3 | | | |
| Cristian Garín | 6 | 6 | | | |
| Cristian Garín | 6 | 6 | Cristian Garín | 5 | 4 |
| | | | Salvatore Caruso | 7 | 6 |
| Matteo Donati | 6$^6$ | 6$^4$ | Salvatore Caruso | 7 | 6 |
| Salvatore Caruso | 7$^8$ | 7$^7$ | | | |

### 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/Alt | M Kližan | 6 | 6 | | | | | | | | | | | | | |
| | A Giannessi | 2 | 4 | | 1/Alt | M Kližan | 6 | 1 | | | | | | | | |
| | A Martin | 6 | 6 | | | A Martin | 3 | 0$^r$ | | | | | | | | |
| WC | J Sinner | 3 | 2 | | | | | | | 1/Alt | M Kližan | 6$^6$ | 0 | | | |
| WC | Alessandro Coppini | 2 | 2 | | | | | | | | V Galović | 7$^8$ | 6 | | | |
| | V Galović | 6 | 6 | | | V Galović | 4 | 7 | 7 | | | | | | | |
| | L Giustino | 6 | 6 | | | L Giustino | 6 | 5 | 5 | | | | | | | |
| 6 | S Robert | 2 | 1 | | | | | | | | | | | V Galović | 4 | 3 |
| 3 | P Sousa | 4 | 6$^3$ | | | | | | | | | | | C Garín | 6 | 6 |
| | C Garín | 6 | 7$^7$ | | | C Garín | 6 | 6 | | | | | | | | |
| | T Brkić | 6 | 4 | | | T Brkić | 4 | 4 | | | | | | | | |
| | I Nedelko | 2 | 1$^r$ | | | | | | | | C Garín | 6 | 6 | | | |
| | A Pavić | 3 | 3 | | | | | | | 5 | JI Londero | 4 | 2 | | | |
| Q | D Brown | 6 | 6 | | Q | D Brown | 5 | 2 | | | | | | | | |
| Q | G Mager | 4 | 7$^{10}$ | 6$^5$ | 5 | JI Londero | 7 | 6 | | | | | | | | |
| 5 | JI Londero | 6 | 6$^8$ | 7$^7$ | | | | | | | | | | | | |

### 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 |
| 8 | R Dutra Silva | 0 | 4 | | | | | | | | | | | | | | |
| | M Donati | 6 | 6 | | | M Donati | 7$^7$ | 2 | | | | | | | | | |
| Q | F Coria | 7$^7$ | 6 | | Q | F Coria | 6$^4$ | 0$^r$ | | | | | | | | | |
| | D Gimeno Traver | 6$^2$ | 4 | | | | | | | | M Donati | 1 | 6 | 6 | | | |
| | GM Moroni | 6 | 6 | | | | | | | WC | F Baldi | 6 | 3 | 2 | | | |
| | Z Kolář | 2 | 2 | | | GM Moroni | 6$^3$ | 3 | | | | | | | | | |
| WC | F Baldi | 6 | 2 | 6 | WC | F Baldi | 7$^7$ | 6 | | | | | | | | | |
| 4 | T Monteiro | 3 | 6 | 4 | | | | | | | | | | | M Donati | 6$^6$ | 6$^4$ |
| 7 | G Elias | 5 | 6 | 3 | | | | | | | | | | | S Caruso | 7$^8$ | 7$^7$ |
| | S Caruso | 7 | 3 | 6 | | S Caruso | 6 | 1 | 7 | | | | | | | | |
| | F Horanský | 6 | 6 | | | F Horanský | 2 | 6 | 5 | | | | | | | | |
| WC | F Forti | 4 | 1 | | | | | | | | S Caruso | 6 | 7$^7$ | | | | |
| | A Arnaboldi | 6 | 4 | 6$^5$ | | | | | | Q | F Argüello | 2 | 6$^4$ | | | | |
| LL | R Marcora | 2 | 6 | 7$^7$ | LL | R Marcora | 7$^7$ | 1 | 3 | | | | | | | | |
| Q | F Argüello | 6 | 6 | | Q | F Argüello | 6$^5$ | 6 | 6 | | | | | | | | |
| 2 | H Dellien | 4 | 3 | | | | | | | | | | | | | | |