| European Amateur Championship | 2020/03/18 16:00 | Heikki Niva v Ben Hancorn | 3-3 |
| Gibraltar Open 2019 | 2018/08/23 08:00 | Heikki Niva v Kevin Van Hove | 3-4 |
| Gibraltar Open 2019 | 2017/08/24 14:00 | Andy Hicks v Heikki Niva | 4-1 |
| Gibraltar Open 2019 | 2017/07/05 06:10 | Heikki Niva v Mark Williams | 0-1 |
| Gibraltar Open 2019 | 2017/07/05 05:14 | Ryan Day v Heikki Niva | 1-0 |
| Gibraltar Open 2019 | 2017/07/03 05:45 | Yan Bingtao v Heikki Niva | 1-0 |
| Gibraltar Open 2019 | 2017/07/03 04:59 | Heikki Niva v Zhou Yuelong | 0-1 |