# 2022 Porto Open – Singles

Altuğ Çelikbilek was the defending champion and successfully defended his title after Christopher O'Connell retired at 7–6$^{(7–5)}$, 3–1 down in the final.

## Seeds

* James Duckworth (semifinals)
* Yoshihito Nishioka (semifinals)
* Christopher O'Connell (final, retired)
* Nuno Borges (first round)
* Hugo Grenier (quarterfinals, retired)
* Egor Gerasimov (quarterfinals)
* Constant Lestienne (first round, retired)
* Emilio Gómez (withdrew)

## 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 |
| 1 | James Duckworth | 6$^5$ | 4 | | | | |
| | Altuğ Çelikbilek | 7$^7$ | 6 | | | | |
| | Altuğ Çelikbilek | 7$^7$ | 6 | | Altuğ Çelikbilek | 7$^7$ | 3 |
| | | | | 3 | Christopher O'Connell | 6$^5$ | 1$^r$ |
| 3 | Christopher O'Connell | 6 | 6 | 3 | Christopher O'Connell | 6$^5$ | 1$^r$ |
| 2 | Yoshihito Nishioka | 3 | 3 | | | | |

### 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 |
| 1 | J Duckworth | 6 | 6 | | | | | | | | | | | | | | |
| WC | Pedro Araújo | 3 | 4 | | 1 | J Duckworth | 6 | 6 | | | | | | | | | |
| Alt | A Bellier | 6 | 2 | 6 | Alt | A Bellier | 2 | 1 | | | | | | | | | |
| Alt | J Jung | 3 | 6 | 4 | | | | | | 1 | J Duckworth | 7$^7$ | 6 | | | | |
| | M Bašić | 6 | 4 | 3 | | | | | | Q | A McHugh | 6$^3$ | 0 | | | | |
| Q | A McHugh | 3 | 6 | 6 | Q | A McHugh | 7$^7$ | 6 | | | | | | | | | |
| | F Ferreira Silva | 7 | 2 | | | F Ferreira Silva | 6$^5$ | 1 | | | | | | | | | |
| 7 | C Lestienne | 5 | 1$^r$ | | | | | | | | | | | 1 | J Duckworth | 6$^5$ | 4 |
| 4 | N Borges | 6$^5$ | 4 | | | | | | | | | | | | A Çelikbilek | 7$^7$ | 6 |
| | A Escoffier | 7$^7$ | 6 | | | A Escoffier | 2 | 3 | | | | | | | | | |
| | A Çelikbilek | 6 | 6 | | | A Çelikbilek | 6 | 6 | | | | | | | | | |
| | R Olivo | 3 | 3 | | | | | | | | A Çelikbilek | 7 | 6 | | | | |
| | Y Uchiyama | 5 | 4 | | | | | | | 6 | E Gerasimov | 5 | 4 | | | | |
| | E Donskoy | 7 | 6 | | | E Donskoy | 3 | 7$^9$ | 2 | | | | | | | | |
| Q | G Décamps | 7$^7$ | 4 | 1 | 6 | E Gerasimov | 6 | 6$^7$ | 6 | | | | | | | | |
| 6 | E Gerasimov | 6$^3$ | 6 | 6 | | | | | | | | | | | | | |

### Bottom half

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals |
| LL | K de Schepper | 6 | 6 | | | | | | | | | | | | | | |
| Q | U Blanch | 4 | 4 | | LL | K de Schepper | 5 | 3 | | | | | | | | | |
| | K Uchida | 7$^7$ | 7$^7$ | | | K Uchida | 7 | 6 | | | | | | | | | |
| | I Marchenko | 6$^3$ | 6$^3$ | | | | | | | K Uchida | 4 | 2 | | | | | |
| WC | J Domingues | 7 | 6$^2$ | 1 | | | | | 3 | C O'Connell | 6 | 6 | | | | | |
| | G Barrère | 5 | 7$^7$ | 6 | | G Barrère | 3 | 1 | | | | | | | | | |
| Q | O Jasika | 2 | 4 | | 3 | C O'Connell | 6 | 6 | | | | | | | | | |
| 3 | C O'Connell | 6 | 6 | | | | | | | | | | | 3 | C O'Connell | 6 | 6 |
| 5 | H Grenier | 6 | 7 | | | | | | | | | | | 2 | Y Nishioka | 3 | 3 |
| WC | P Sousa | 3 | 5 | | 5 | H Grenier | 6 | 6 | | | | | | | | | |
| | H Moriya | 4 | 2 | | Q | D Rodrigues | 4 | 2 | | | | | | | | | |
| Q | Daniel Rodrigues | 6 | 6 | | | | | | 5 | H Grenier | 6 | 2 | 0$^r$ | | | | |
| | Em Nava | 6 | 6 | | | | | | 2 | Y Nishioka | 2 | 6 | 4 | | | | |
| Q | T Bellucci | 4 | 3 | | | Em Nava | 6$^2$ | 3 | | | | | | | | | |
| | A Kuznetsov | 6$^5$ | 5 | | 2 | Y Nishioka | 7$^7$ | 6 | | | | | | | | | |
| 2 | Y Nishioka | 7$^7$ | 7 | | | | | | | | | | | | | | |