# 2022 Lisboa Belém Open – Men's singles

Dmitry Popko was the defending champion but chose not to defend his title.
Marco Cecchinato won the title after defeating Luca Van Assche 6–3, 6–3 in the final.

## Seeds

* Pedro Cachin (first round)
* Carlos Taberner (quarterfinals)
* Francesco Passaro (second round)
* Filip Misolic (semifinals, retired)
* Marco Cecchinato (champion)
* Franco Agamenone (second round)
* Alexandre Müller (quarterfinals)
* Manuel Guinard (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 | Final | Final | Final | Final |
| Q | Luca Van Assche | 6 | 0 | | | | |
| 4 | Filip Misolic | 1 | 0$^r$ | | | | |
| 4 | Filip Misolic | 1 | 0$^r$ | Q | Luca Van Assche | 3 | 3 |
| | | | | 5 | Marco Cecchinato | 6 | 6 |
| Alt | Timofey Skatov | 5 | 6$^2$ | 5 | Marco Cecchinato | 6 | 6 |
| 5 | Marco Cecchinato | 7 | 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 | Semifinals |
| 1 | P Cachin | 2 | 7$^7$ | 6$^4$ | | | | | | | | | | | | | |
| | G Elias | 6 | 6$^3$ | 7$^7$ | | G Elias | 3 | 2 | | | | | | | | | |
| | R Bonadio | 6 | 1 | 6$^4$ | Q | L Van Assche | 6 | 6 | | | | | | | | | |
| Q | L Van Assche | 4 | 6 | 7$^7$ | | | | | | Q | L Van Assche | 6 | 7 | | | | |
| | Z Kolář | 1 | 6 | 3 | | | | | | 7 | A Müller | 4 | 5 | | | | |
| Q | D Ajduković | 6 | 4 | 6 | Q | D Ajduković | 1 | 3 | | | | | | | | | |
| WC | J Domingues | 7$^7$ | 2 | 3 | 7 | A Müller | 6 | 6 | | | | | | | | | |
| 7 | A Müller | 6$^5$ | 6 | 6 | | | | | | | | | | Q | L Van Assche | 6 | 0 |
| 4 | F Misolic | 7 | 6 | | | | | | | | | | | 4 | F Misolic | 1 | 0$^r$ |
| | A Pellegrino | 5 | 2 | | 4 | F Misolic | 2 | 6 | 6 | | | | | | | | |
| WC | P Sousa | 6 | 4 | 1 | | V Kopřiva | 6 | 2 | 3 | | | | | | | | |
| | V Kopřiva | 4 | 6 | 6 | | | | | | 4 | F Misolic | 6 | 6 | | | | |
| Q | Jeremy Jahn | 5 | 4 | | | | | | | | G Zeppieri | 4 | 4 | | | | |
| | G Zeppieri | 7 | 6 | | | G Zeppieri | 4 | 6 | 6 | | | | | | | | |
| SE | N Moreno de Alboran | 4 | 5 | | 6 | F Agamenone | 6 | 0 | 1 | | | | | | | | |
| 6 | F Agamenone | 6 | 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 | Semifinals |
| 8 | M Guinard | 3 | 6$^4$ | | | | | | | | | | | | | | | |
| | GM Moroni | 6 | 7$^7$ | | | GM Moroni | 4 | 3$^r$ | | | | | | | | | | |
| | B Paire | 7 | 6 | | | B Paire | 6 | 4 | | | | | | | | | | |
| Q | G Oliveira | 5 | 4 | | | | | | | | B Paire | 4 | 6 | 5 | | | | |
| Q | O Roca Batalla | 6$^8$ | 6$^5$ | | | | | | | Alt | T Skatov | 6 | 2 | 7 | | | | |
| Alt | T Skatov | 7$^{10}$ | 7$^7$ | | Alt | T Skatov | 6 | 5 | 6 | | | | | | | | | |
| WC | F Ferreira Silva | 4 | 6 | 1 | 3 | F Passaro | 1 | 7 | 1 | | | | | | | | | |
| 3 | F Passaro | 6 | 3 | 6 | | | | | | | | | | | Alt | T Skatov | 5 | 6$^2$ |
| 5 | M Cecchinato | 6 | 6 | | | | | | | | | | | | 5 | M Cecchinato | 7 | 7$^7$ |
| LL | D Michalski | 1 | 2 | | 5 | M Cecchinato | 6 | 7$^7$ | | | | | | | | | | |
| Alt | M Zekić | 4 | 4 | | | G Mager | 1 | 6$^2$ | | | | | | | | | | |
| | G Mager | 6 | 6 | | | | | | | 5 | M Cecchinato | 7$^7$ | 6 | | | | | |
| Q | J Barranco Cosano | 4 | 2 | | | | | | | 2 | C Taberner | 6$^2$ | 4 | | | | | |
| | N Milojević | 6 | 6 | | | N Milojević | 0 | 7$^8$ | 6$^5$ | | | | | | | | | |
| | C-M Stebe | 4 | 4 | | 2 | C Taberner | 6 | 6$^6$ | 7$^7$ | | | | | | | | | |
| 2 | C Taberner | 6 | 6 | | | | | | | | | | | | | | | |