# 2021 Città di Forlì II – Singles

This was the first edition of the tournament.
Maxime Cressy won the title after defeating Matthias Bachinger 6–4, 6–2 in the final.

## Seeds

* Oscar Otte (second round, retired)
* Maxime Cressy (champion)
* Radu Albot (second round)
* Jurij Rodionov (semifinals)
* Federico Gaio (first round)
* Altuğ Çelikbilek (quarterfinals)
* Daniel Masur (first round)
* Thomas Fabbiano (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 |
| | Matthias Bachinger | 4 | 7 | 6 | | | | |
| 4 | Jurij Rodionov | 6 | 5 | 2 | | | | |
| 4 | Jurij Rodionov | 6 | 5 | 2 | | Matthias Bachinger | 4 | 2 |
| | | | | | 2 | Maxime Cressy | 6 | 6 |
| Q | Jelle Sels | 2 | 5 | | 2 | Maxime Cressy | 6 | 6 |
| 2 | Maxime Cressy | 6 | 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 | Semifinals | Semifinals |
| 1 | O Otte | 6 | 7 | | | | | | | | | | | | | | | |
| WC | F Forti | 3 | 5 | | 1 | O Otte | 2 | 1$^r$ | | | | | | | | | | |
| | A Ritschard | 3 | 4 | | | M Bachinger | 6 | 3 | | | | | | | | | | |
| | M Bachinger | 6 | 6 | | | | | | | | M Bachinger | 7$^7$ | 7 | | | | | |
| | V Sachko | 6 | 5 | 6 | | | | | | 6 | A Çelikbilek | 6$^4$ | 5 | | | | | |
| WC | L Nardi | 4 | 7 | 4 | | V Sachko | 2 | 4 | | | | | | | | | | |
| Alt | R Brancaccio | 5 | 2 | | 6 | A Çelikbilek | 6 | 6 | | | | | | | | | | |
| 6 | A Çelikbilek | 7 | 6 | | | | | | | | | | | | M Bachinger | 4 | 7 | 6 |
| 4 | J Rodionov | 7$^7$ | 5 | 6 | | | | | | | | | | 4 | J Rodionov | 6 | 5 | 2 |
| Q | J Forejtek | 6$^4$ | 7 | 3 | 4 | J Rodionov | 6 | 6 | | | | | | | | | | |
| Q | A Šetkić | 3 | 4 | | | L Rosol | 3 | 4 | | | | | | | | | | |
| | L Rosol | 6 | 6 | | | | | | | 4 | J Rodionov | 6 | 6 | | | | | |
| | A Arnaboldi | 6 | 3 | 4 | | | | | | | F Cobolli | 4 | 2 | | | | | |
| | F Cobolli | 1 | 6 | 6 | | F Cobolli | 6$^3$ | 7$^8$ | 7$^9$ | | | | | | | | | |
| | P Kotov | 7 | 6 | | | P Kotov | 7$^7$ | 6$^6$ | 6$^7$ | | | | | | | | | |
| 7 | D Masur | 5 | 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 | Semifinals | Semifinals | Semifinals | Semifinals |
| 8 | T Fabbiano | 6$^6$ | 6$^1$ | | | | | | | | | | | | | | |
| Q | A Vatutin | 7$^8$ | 7$^7$ | | Q | A Vatutin | 2 | 6 | 6 | | | | | | | | |
| Alt | L Miedler | 7$^7$ | 6 | | Alt | L Miedler | 6 | 0 | 2 | | | | | | | | |
| | M Bašić | 6$^4$ | 4 | | | | | | | Q | A Vatutin | 3 | 4 | | | | |
| Q | J Sels | 7$^7$ | 6 | | | | | | | Q | J Sels | 6 | 6 | | | | |
| WC | M Gigante | 6$^3$ | 2 | | Q | J Sels | 7 | 6 | | | | | | | | | |
| | A Vavassori | 7$^7$ | 4 | 6$^2$ | 3 | R Albot | 5 | 4 | | | | | | | | | |
| 3 | R Albot | 6$^2$ | 6 | 7$^7$ | | | | | | | | | | Q | J Sels | 2 | 5 |
| 5 | F Gaio | 0 | 3 | | | | | | | | | | | 2 | M Cressy | 6 | 7 |
| PR | J Lenz | 6 | 6 | | PR | J Lenz | 7 | 7 | | | | | | | | | |
| | T Kamke | 4 | 6$^5$ | | | D Stricker | 5 | 5 | | | | | | | | | |
| | D Stricker | 6 | 7$^7$ | | | | | | | PR | J Lenz | 3 | 4 | | | | |
| | M Viola | 1 | 6 | 6 | | | | | | 2 | M Cressy | 6 | 6 | | | | |
| PR | Y Maden | 6 | 4 | 4 | | M Viola | 4 | 4 | | | | | | | | | |
| SE | E Karlovskiy | 3 | 2 | | 2 | M Cressy | 6 | 6 | | | | | | | | | |
| 2 | M Cressy | 6 | 6 | | | | | | | | | | | | | | |