Head to Head
| Greece A1 | 2021/04/09 10:00 | Ydraikos v Olympiakos | W | 9-18 |
| Greece A1 | 2020/02/19 17:30 | Olympiakos v Ydraikos | W | 15-6 |
| Greece A1 | 2019/10/23 16:53 | Ydraikos v Olympiakos | W | 2-14 |
| Friendly Matches | 2019/09/22 16:30 | Olympiakos v Ydraikos | W | 11-6 |
| Others | 2018/11/14 17:30 | Olympiakos v Ydraikos | W | 12-3 |
| Others | 2018/05/17 12:30 | Ydraikos v Olympiakos | W | 3-14 |
| Others | 2017/01/14 12:21 | Olympiakos v Ydraikos | W | 10-3 |
Home History
| Greece A1 | 2021/05/17 15:00 | Olympiakos v NO Vouliagmenis | W | 12-9 |
| Greece A1 | 2021/05/13 15:00 | Olympiakos v NO Vouliagmenis | W | 11-9 |
| Greece A1 | 2021/05/11 15:30 | NO Vouliagmenis v Olympiakos | W | 6-11 |
| Greece A1 | 2021/05/07 10:00 | Apollon Smyrnis v Olympiakos | W | 10-15 |
| Greece A1 | 2021/05/05 15:00 | Olympiakos v Apollon Smyrnis | W | 12-11 |
| Champions League | 2021/04/21 15:45 | Olympiakos v CN Marseille | W | 11-7 |
| Champions League | 2021/04/20 18:15 | Pro Recco v Olympiakos | L | 13-6 |
| Champions League | 2021/04/19 15:45 | Jug Dubrovnik v Olympiakos | D | 11-11 |
Away History
| Greece A1 | 2021/05/08 10:00 | Ydraikos v PAOK | W | 12-7 |
| Greece A1 | 2021/04/25 16:57 | GS Peristeriou v Ydraikos | L | 11-6 |
| Greece A1 | 2021/04/23 10:00 | Ydraikos v GS Peristeriou | L | 1-5 |
| Greece A1 | 2021/04/21 17:00 | GS Peristeriou v Ydraikos | D | 7-7 |
| Greece A1 | 2021/04/18 11:30 | Ydraikos v PAOK | L | 8-10 |
| Greece A1 | 2021/04/14 16:30 | Ethnikos Piraeus v Ydraikos | W | 6-8 |
| Greece A1 | 2021/04/09 10:00 | Ydraikos v Olympiakos | L | 9-18 |
| Greece A1 | 2021/03/31 10:00 | Ydraikos v Apollon Smyrnis | L | 2-19 |