See Key for column definitions.
| Team | Competition | Starts | Subs | Subbed | Total | Mins | MPG | Rating |
|---|
| Portugal U21 | UEFA U21 Championship | 1 | 2 | 0 | 3 | 54 | 18.0 | 6.85 |
| Portugal U21 | UEFA U21 Championship - Qualification | 5 | 1 | 4 | 6 | 372 | 62.0 | 6.85 |
| Totals | | 6 | 3 | 4 | 9 | 426 | 47.3 | 6.85 |
Key to column names
See Key for column definitions.
| Team | Competition | Appearances | Goals | GPG | MPG | Assists | Shots | On T | Off T | SPG | Dribbles | Passes | Acc | Fouled |
|---|
| Portugal U21 | UEFA U21 Championship | 3 | | | | 0 | 1 | 0 | 1 | N/A | 0 | 42 | | 0 |
| Portugal U21 | UEFA U21 Championship - Qualification | 6 | 1 | 6.0 | 372 | 0 | 0 | 0 | 0 | 0 | 0 | | | 0 |
| Totals | | 9 | 1 | | | 0 | 1 | 0 | 1 | 1 | 0 | 42 | 0 | 0 |
Key to column names
- GPG
- Goals per game
- MPG
- Minutes per goal
- SPG
- Shots per goal
- On T
- Shots on Target
- Off T
- Shots off Target
- Acc
- Accurate passes
| Team |
Competition |
Appearances |
Conceded | Saves | Tackles | Blocks | Interceptions | Duels Won | Duels Lost | Fouls Committed |
| Portugal U21 | UEFA U21 Championship | 3 | 0 | | 1 | 1 | 0 | 1 | 5 | 2 |
| Portugal U21 | UEFA U21 Championship - Qualification | 6 | | | 0 | 0 | 0 | 0 | 0 | 0 |
| Totals | | 9 | 0 | 0 | 1 | 1 | 0 | 1 | 5 | 2 |
The total yellow and red cards received by João Marques in each competition are shown below.
| Team | Competition | Appearances | Yellows | Reds |
|---|
| Portugal U21 | UEFA U21 Championship | 3 | 0 | 0 |
| Portugal U21 | UEFA U21 Championship - Qualification | 6 | 0 | 0 |
| Totals | | 9 | 0 | 0 |
