# 2020 Internazionali di Tennis Città di Trieste – Singles

This was the first edition of the tournament.
Carlos Alcaraz won the title after defeating Riccardo Bonadio 6–4, 6–3 in the final.

## Seeds

* Alexei Popyrin (second round)
* Antoine Hoang (first round)
* Yannick Hanfmann (second round)
* Lorenzo Giustino (first round)
* Roberto Marcora (first round)
* Alessandro Giannessi (first round)
* Jurij Rodionov (first round)
* Lukáš Lacko (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 |
| WC | Lorenzo Musetti | 5 | 6 | 3 | | | | |
| Q | Carlos Alcaraz | 7 | 2 | 6 | | | | |
| Q | Carlos Alcaraz | 7 | 2 | 6 | Q | Carlos Alcaraz | 6 | 6 |
| | | | | | Q | Riccardo Bonadio | 4 | 3 |
| | Mario Vilella Martínez | 6$^5$ | 2 | | Q | Riccardo Bonadio | 4 | 3 |
| Q | Riccardo Bonadio | 7$^7$ | 6 | | | | | |

### 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 | Semifinals |
| 1 | A Popyrin | 6 | 7$^7$ | | | | | | | | | | | | | | |
| | Q Halys | 4 | 6$^3$ | | 1 | A Popyrin | 5 | 3 | | | | | | | | | |
| | D Altmaier | 3 | 2 | | WC | L Musetti | 7 | 6 | | | | | | | | | |
| WC | L Musetti | 6 | 6 | | | | | | WC | L Musetti | 6 | 6 | | | | | |
| WC | M Gigante | 6 | 6 | | | | | | | JP Ficovich | 1 | 3 | | | | | |
| | F Baldi | 2 | 2 | | WC | M Gigante | 2 | 4 | | | | | | | | | |
| | JP Ficovich | 7 | 7 | | | JP Ficovich | 6 | 6 | | | | | | | | | |
| 8 | L Lacko | 5 | 5 | | | | | | | | | | WC | L Musetti | 5 | 6 | 3 |
| 4 | L Giustino | 4 | 2 | | | | | | | | | | Q | C Alcaraz | 7 | 2 | 6 |
| | M Viola | 6 | 6 | | | M Viola | 4 | 2 | | | | | | | | | |
| | M Bourgue | 3 | 3 | | Q | C Alcaraz | 6 | 6 | | | | | | | | | |
| Q | C Alcaraz | 6 | 6 | | | | | | Q | C Alcaraz | 7$^7$ | 6 | | | | | |
| | F Mena | 0 | 1 | | | | | | Q | TM Etcheverry | 6$^2$ | 3 | | | | | |
| | M Moraing | 6 | 6 | | | M Moraing | 3 | 4 | | | | | | | | | |
| Q | TM Etcheverry | 6 | 4 | 6 | Q | TM Etcheverry | 6 | 6 | | | | | | | | | |
| 6 | A Giannessi | 3 | 6 | 1 | | | | | | | | | | | | | |

### 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 Marcora | 4 | 2 | | | | | | | | | | | | | | | |
| LL | T Kamke | 6 | 6 | | LL | T Kamke | 6$^7$ | 2 | | | | | | | | | | |
| | M Trungelliti | 3 | 6$^3$ | | | L Broady | 7$^9$ | 6 | | | | | | | | | | |
| | L Broady | 6 | 7$^7$ | | | | | | | | L Broady | 7$^{11}$ | 4 | 4 | | | | |
| WC | G Zeppieri | 1 | 3 | | | | | | | | M Vilella Martínez | 6$^9$ | 6 | 6 | | | | |
| | M Vilella Martínez | 6 | 6 | | | M Vilella Martínez | 4 | 6 | 6 | | | | | | | | | |
| LL | V Galović | 2 | 6 | 1 | 3 | Y Hanfmann | 6 | 3 | 2 | | | | | | | | | |
| 3 | Y Hanfmann | 6 | 3 | 6 | | | | | | | | | | | | M Vilella Martínez | 6$^5$ | 2 |
| 7 | J Rodionov | 6$^3$ | 4 | | | | | | | | | | | | Q | R Bonadio | 7$^7$ | 6 |
| Q | R Bonadio | 7$^7$ | 6 | | Q | R Bonadio | 4 | 6 | 6 | | | | | | | | | |
| | R Cid Subervi | 6 | 2 | | | R Cid Subervi | 6 | 3 | 3 | | | | | | | | | |
| Q | G Blancaneaux | 4 | 0$^r$ | | | | | | | Q | R Bonadio | 2 | 7 | 6 | | | | |
| | H Gaston | 1 | 2 | | | | | | | PR | M Marterer | 6 | 5 | 4 | | | | |
| PR | M Marterer | 6 | 6 | | PR | M Marterer | 7$^{11}$ | 7$^8$ | | | | | | | | | | |
| | A Collarini | 1 | 6 | 6 | | A Collarini | 6$^9$ | 6$^6$ | | | | | | | | | | |
| 2 | A Hoang | 6 | 2 | 4 | | | | | | | | | | | | | | |