Head to Head
| Griechenland - A1 | 2021/03/27 10:00 | Olympiakos v Ethnikos Piräus | W | 18-4 |
| Griechenland - A1 | 2019/05/10 17:30 | Ethnikos Piräus v Olympiakos | W | 3-13 |
| Griechenland - A1 | 2019/04/10 16:30 | Ethnikos Piräus v Olympiakos | W | 6-17 |
| Others | 2019/01/05 11:59 | Olympiakos v Ethnikos Piräus | W | 14-6 |
Home History
| Champions League | 2021/11/19 17:30 | FTC Budapest v Olympiakos | D | 9-9 |
| Champions League | 2021/11/09 18:45 | VK Novi Beograd v Olympiakos | W | 9-12 |
| Champions League | 2021/10/26 16:15 | Olympiakos v Dinamo Tbilisi | W | 20-9 |
| Champions League | 2021/06/05 11:00 | Olympiakos v CN Marseille | W | 13-12 |
| Champions League | 2021/06/04 11:00 | Waspo Hannover v Olympiakos | L | 10-8 |
| Champions League | 2021/06/03 18:30 | CN Barceloneta v Olympiakos | L | 22-9 |
| Griechenland - Pokal | 2021/05/22 17:00 | Olympiakos v NO Vouliagmenis | W | 9-7 |
| Griechenland - Pokal | 2021/05/21 15:00 | Olympiakos v Ydraikos | W | 18-9 |
Away History
| Griechenland - A1 | 2021/10/09 13:00 | AEK v Ethnikos Piräus | L | 9-8 |
| Griechenland - A1 | 2021/04/15 10:00 | Ethnikos Piräus v NO Chania | L | 8-10 |
| Griechenland - A1 | 2021/04/14 16:30 | Ethnikos Piräus v Ydraikos | L | 6-8 |
| Griechenland - A1 | 2021/04/10 14:00 | Panionios v Ethnikos Piräus | L | 8-1 |
| Griechenland - A1 | 2021/03/31 16:30 | Ethnikos Piräus v AEK | L | 4-7 |
| Griechenland - A1 | 2021/03/27 10:00 | Olympiakos v Ethnikos Piräus | L | 18-4 |
| Griechenland - A1 | 2020/07/08 16:30 | Ethnikos Piräus v Palaiou Falirou | L | 7-12 |
| Griechenland - A1 | 2020/07/02 18:00 | PAOK v Ethnikos Piräus | W | 4-19 |