| Season | Team | Competition | MP | G | A | Rating | ||
|---|---|---|---|---|---|---|---|---|
| 2025 | Valour | Canadian Premier League | 1 | 0 | 0 | 0 | 0 | – |
| 2025 | Sligo Rovers | Premier Division | 7 | 0 | 0 | 1 | 0 | 6.3 |
| 2024/2025 | Wellington Phoenix | A-League | 7 | 0 | 0 | 1 | 0 | 6.6 |
| 2024 | Wellington Phoenix 2 | National League | 1 | 1 | 0 | 0 | 0 | – |
| 2023/2024 | Wellington Phoenix | A-League | 23 | 1 | 3 | 2 | 0 | 6.9 |
| 2023 | Wellington Phoenix 2 | National League | 2 | 3 | 0 | 0 | 0 | – |
| 2022/2023 | Wellington Phoenix | A-League | 23 | 0 | 0 | 2 | 0 | 6.4 |
| 2022 | Wellington Phoenix 2 | National League | 1 | 2 | 0 | 0 | 0 | – |
| 2021/2022 | Wellington Phoenix | A-League | 13 | 0 | 0 | 1 | 0 | 6.5 |
| 2020/2021 | Wellington Phoenix 2 | Football Championship | 3 | 3 | 0 | 0 | 0 | – |
| Total | 81 | 10 | 3 | 7 | 0 | – | ||
| Date | From | To | Type | |
|---|---|---|---|---|
| - | Sligo Rovers | Valour | Free agent | |
| 01 Nov 2025 | Wellington Phoenix | Sligo Rovers | Free agent | |
| 11 Jan 2021 | Lower Hutt City | Wellington Phoenix | Free agent | |
| 03 Jan 2021 | Wellington Phoenix | Lower Hutt City | Free agent |
O. van Hattum career history shows progression across clubs and competitions, including club timeline, national team appearances and overall career totals.