Home History
| World Club Friendlies | 2021/06/26 15:00 | Union Luxembourg v Eintracht Trier | L | 0-1 |
| Europe Friendlies | 2021/06/24 16:30 | Swift Hesperange v Union Luxembourg | L | 5-2 |
| Luxembourg Division Nationale | 2021/05/30 14:00 | Union Luxembourg v Progres Niedercorn | D | 0-0 |
| Luxembourg Division Nationale | 2021/05/22 14:00 | UT Petange v Union Luxembourg | W | 0-5 |
| Luxembourg Division Nationale | 2021/05/16 14:00 | Union Luxembourg v FC Luxemburg City | W | 3-0 |
| Luxembourg Division Nationale | 2021/05/12 17:30 | F91 Dudelange v Union Luxembourg | D | 1-1 |
| Luxembourg Division Nationale | 2021/05/08 15:00 | Union Luxembourg v UNA Strassen | W | 2-1 |
| Luxembourg Division Nationale | 2021/05/02 14:00 | Wiltz 71 v Union Luxembourg | W | 0-1 |
Away History
| Europe Friendlies | 2021/06/30 14:00 | Eupen v Seraing United | L | 2-1 |
| Belgium First Division B Play-Offs | 2021/05/08 18:45 | Waasland-Beveren v Seraing United | W | 2-5 |
| Belgium First Division B Play-Offs | 2021/05/01 16:30 | Seraing United v Waasland-Beveren | D | 1-1 |
| Belgium First Division B | 2021/04/24 18:00 | Lommel v Seraing United | W | 1-3 |
| Belgium First Division B | 2021/04/17 14:00 | Seraing United v Lierse Kempenzonen | D | 0-0 |
| Belgium First Division B | 2021/04/10 18:45 | Seraing United v Deinze | W | 1-0 |
| Belgium First Division B | 2021/04/03 18:45 | Union Saint Gilloise v Seraing United | L | 2-0 |
| Belgium First Division B | 2021/03/21 15:00 | Seraing United v RWD Molenbeek | W | 1-0 |