# 2022 Open de Oeiras II – Singles

Gastão Elias was the two-time defending champion and successfully defended his title, defeating Alessandro Giannessi 7–6$^{(7–4)}$, 6–1 in the final.

## Seeds

* Thiago Monteiro (first round)
* Zdeněk Kolář (semifinals)
* Nuno Borges (second round)
* Christopher O'Connell (quarterfinals)
* Alessandro Giannessi (final)
* Dmitry Popko (second round)
* Jozef Kovalík (semifinals)
* Dimitar Kuzmanov (quarterfinals)

## 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 |
| 7 | Jozef Kovalík | 6 | 4 | 5 | | | | |
| 5 | Alessandro Giannessi | 2 | 6 | 7 | | | | |
| 5 | Alessandro Giannessi | 2 | 6 | 7 | 5 | Alessandro Giannessi | 6$^4$ | 1 |
| | | | | | | Gastão Elias | 7$^7$ | 6 |
| | Gastão Elias | 2 | 6 | 6 | | Gastão Elias | 7$^7$ | 6 |
| 2 | Zdeněk Kolář | 6 | 2 | 1 | | | | |

### 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 | T Monteiro | 4 | 5 | | | | | | | | | | | | | | | |
| | K Żuk | 6 | 7 | | | K Żuk | 4 | 3 | | | | | | | | | | |
| | T Skatov | 6$^5$ | 6$^5$ | | | L Rosol | 6 | 6 | | | | | | | | | | |
| | L Rosol | 7$^7$ | 7$^7$ | | | | | | | | L Rosol | 6$^6$ | 2 | | | | | |
| | E Furness | 7$^9$ | 6 | | | | | | | 7 | J Kovalík | 7$^8$ | 6 | | | | | |
| WC | Pedro Araújo | 6$^7$ | 3 | | | E Furness | 6$^5$ | 2 | | | | | | | | | | |
| Q | E Kırkın | 2 | 3 | | 7 | J Kovalík | 7$^7$ | 6 | | | | | | | | | | |
| 7 | J Kovalík | 6 | 6 | | | | | | | | | | | 7 | J Kovalík | 6 | 4 | 5 |
| 4 | C O'Connell | 4 | 6 | 6 | | | | | | | | | | 5 | A Giannessi | 2 | 6 | 7 |
| | N Serdarušić | 6 | 3 | 2 | 4 | C O'Connell | 6 | 6 | | | | | | | | | | |
| | T Lamasine | 6 | 2 | 7$^7$ | | T Lamasine | 3 | 4 | | | | | | | | | | |
| Q | A Rybakov | 3 | 6 | 6$^5$ | | | | | | 4 | C O'Connell | 4 | 4 | | | | | |
| Q | F Marozsán | 6 | 6 | | | | | | | 5 | A Giannessi | 6 | 6 | | | | | |
| | D Yevseyev | 2 | 3 | | Q | F Marozsán | 7 | 6$^4$ | 4 | | | | | | | | | |
| | L Darderi | 6 | 6$^5$ | 1 | 5 | A Giannessi | 5 | 7$^7$ | 6 | | | | | | | | | |
| 5 | A Giannessi | 4 | 7$^7$ | 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 | Semifinals |
| 6 | D Popko | 6 | 3 | 6 | | | | | | | | | | | | | | | |
| | D Svrčina | 4 | 6 | 4 | 6 | D Popko | 5 | 4 | | | | | | | | | | | |
| | Z Piros | 6 | 6 | | | Z Piros | 7 | 6 | | | | | | | | | | | |
| WC | J Domingues | 3 | 3 | | | | | | | | Z Piros | 4 | 7 | 3 | | | | | |
| | S Fanselow | 1 | 2 | | | | | | | | G Elias | 6 | 5 | 6 | | | | | |
| | G Elias | 6 | 6 | | | G Elias | 2 | 7 | 6 | | | | | | | | | | |
| | P Sousa | 6 | 5 | 3 | 3 | N Borges | 6 | 5 | 3 | | | | | | | | | | |
| 3 | N Borges | 4 | 7 | 6 | | | | | | | | | | | | G Elias | 2 | 6 | 6 |
| 8 | D Kuzmanov | 7$^7$ | 0 | 6 | | | | | | | | | | | 2 | Z Kolář | 6 | 2 | 1 |
| Q | A Lazarov | 6$^5$ | 6 | 2 | 8 | D Kuzmanov | 6 | 6 | | | | | | | | | | | |
| Q | Lucas Gerch | 6 | 6 | | Q | L Gerch | 2 | 1 | | | | | | | | | | | |
| | FC Jianu | 3 | 4 | | | | | | | 8 | D Kuzmanov | 1 | 6 | 6$^6$ | | | | | |
| Q | Oscar José Gutierrez | 6 | 6 | | | | | | | 2 | Z Kolář | 6 | 0 | 7$^8$ | | | | | |
| WC | T Cação | 2 | 3 | | Q | OJ Gutierrez | 4 | 3 | | | | | | | | | | | |
| | L Wessels | 1 | 4 | | 2 | Z Kolář | 6 | 6 | | | | | | | | | | | |
| 2 | Z Kolář | 6 | 6 | | | | | | | | | | | | | | | | |