Head to Head
| Greece A1 | 2019/05/10 17:30 | Ethnikos Piraeus v Olympiakos | W | 3-13 |
| Greece A1 | 2019/04/10 16:30 | Ethnikos Piraeus v Olympiakos | W | 6-17 |
| Others | 2019/01/05 11:59 | Olympiakos v Ethnikos Piraeus | W | 14-6 |
Home History
| Champions League | 2020/03/04 18:00 | Spandau Berlin v Olympiakos | W | 7-11 |
| Greece A1 | 2020/02/25 17:26 | Olympiakos v Palaio | W | 15-5 |
| Champions League | 2020/02/22 18:00 | Olympiakos v CN Barceloneta | L | 9-15 |
| Greece A1 | 2020/02/19 17:30 | Olympiakos v Ydraikos | W | 15-6 |
| Champions League | 2020/02/05 19:30 | Jug Dubrovnik v Olympiakos | L | 13-9 |
| Champions League | 2019/12/09 16:30 | Olympiakos v Jug Dubrovnik | W | 6-5 |
| Champions League | 2019/12/03 18:15 | CN Barceloneta v Olympiakos | D | 11-11 |
| Greece A1 | 2019/11/30 10:28 | Olympiakos v ANO Glyfadas | W | 20-4 |
Away History
| Greece A1 | 2020/07/08 16:30 | Ethnikos Piraeus v Palaiou Falirou | L | 7-12 |
| Greece A1 | 2020/07/02 18:00 | PAOK v Ethnikos Piraeus | W | 4-19 |
| Greece A1 | 2020/02/25 19:00 | Panathinaikos v Ethnikos Piraeus | W | 6-7 |
| Greece A1 | 2020/02/19 18:29 | Panionios v Ethnikos Piraeus | D | 9-9 |
| Greece A1 | 2020/02/07 17:30 | Ethnikos Piraeus v NO Vouliagmenis | L | 3-9 |
| Greece A1 | 2019/11/30 11:57 | Palaiou Falirou v Ethnikos Piraeus | L | 11-8 |
| Greece A1 | 2019/10/23 16:30 | Ethnikos Piraeus v Panionios | W | 8-6 |
| Greece A1 | 2019/10/12 10:57 | NO Vouliagmenis v Ethnikos Piraeus | L | 11-3 |