See Key for column definitions.
| Team | Competition | Starts | Subs | Subbed | Total | Mins | MPG | Rating |
| Morocco U20 | Africa Cup of Nations U20 | 0 | 6 | 0 | 13 | 327 | 25.2 | 6.41 |
| Morocco U20 | World Cup - U20 | 0 | 1 | 6 | 7 | 447 | 63.9 | 7.38 |
| Watford | Championship | 0 | 2 | 7 | 10 | 662 | 66.2 | 6.99 |
| Totals | | 0 | 9 | 13 | 30 | 1,436 | 47.9 | 6.83 |
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 |
| Morocco U20 | Africa Cup of Nations U20 | 13 | 1 | 13.0 | 327 | 1 | 9 | 3 | 6 | 9 | 38 | 81 | | 8 |
| Morocco U20 | World Cup - U20 | 7 | 1 | 7.0 | 447 | 3 | 7 | 3 | 4 | 7 | 37 | 72 | | 5 |
| Watford | Championship | 10 | 3 | 3.3 | 221 | 1 | 16 | 9 | 7 | 5.3 | 48 | 203 | | 11 |
| Totals | | 30 | 5 | | | 5 | 32 | 15 | 17 | 6.4 | 123 | 356 | 0 | 24 |
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 |
| Morocco U20 | Africa Cup of Nations U20 | 13 | 0 | | 4 | 0 | 1 | 23 | 53 | 4 |
| Morocco U20 | World Cup - U20 | 7 | 0 | | 18 | 1 | 5 | 38 | 38 | 5 |
| Watford | Championship | 10 | 0 | | 21 | 1 | 5 | 52 | 72 | 11 |
| Totals | | 30 | 0 | 0 | 43 | 2 | 11 | 113 | 163 | 20 |
The total yellow and red cards received by O. Maamma in each competition are shown below.