AS Monaco v Atlético Madrid, 18 September 2018
| Score | 2-1 to Atlético Madrid |
| Referee | Willie Collum |
| Competition | UEFA Champions League Group A |
| Venue | Stade Louis II, Monaco |
| Attendance | 10,575 |
Kick-off: 6.55pm local (5.55pm BST)
1 AS Monaco
Manager: Leonardo Jardim
2 Atlético Madrid
Manager: Diego Simeone