| Season | League | Apps | Min | Goals | Assists | G+A / 90 | Rating |
|---|---|---|---|---|---|---|---|
| 2020/2021 | Premiership | 4 | — | 3 | 0 | — | — |
| 2021/2022 | A-League Men | 8 | 107 | 0 | 0 | 0 | 6.68 |
| 2022/2023 | A-League Men | 13 | 148 | 0 | 0 | 0 | 6.57 |
| 2023 | National League (New Zealand) | 3 | 133 | 2 | 0 | 1.35 | — |
| 2023/2024 | A-League Men | 17 | 451 | 1 | 3 | 0.8 | 7.04 |
| 2024/2025 | A-League Men | 4 | 124 | 0 | 0 | 0 | 6.76 |
| 2025 | Premier Division | 12 | 440 | 0 | 1 | 0.2 | 6.77 |
| 2025 | Premier League (Canada) | 1 | 1 | 0 | 0 | — | — |
Domestic league competitions only (SportMonks sub_type='domestic'); national-team, continental and cup competitions are excluded. Classification resolved by league id against the canonical leagues index. G+A/90 computed from minutes actually played.
Figures computed from the GioScore season-stats database · as of 2026-07-22
Player stats against each opponent club
| Team | MP | W | D | L | G | A | ||
|---|---|---|---|---|---|---|---|---|
 Waterford United | 3 | 2 | 0 | 1 | 0 | 1 | 0 | 0 |
 Western United | 3 | 2 | 1 | 0 | 0 | 0 | 0 | 0 |
 Sydney | 2 | 1 | 0 | 1 | 0 | 0 | 0 | 0 |
 Perth Glory | 2 | 1 | 1 | 0 | 0 | 0 | 1 | 0 |
 Galway United | 2 | 1 | 0 | 1 | 0 | 0 | 0 | 0 |
 Bohemians | 2 | 0 | 1 | 1 | 0 | 0 | 1 | 0 |
 Central Coast Mariners | 2 | 1 | 0 | 1 | 0 | 1 | 0 | 0 |
 Melbourne Victory | 2 | 1 | 0 | 1 | 0 | 0 | 0 | 0 |
 Drogheda United | 2 | 0 | 0 | 2 | 0 | 0 | 0 | 0 |
 Western Sydney Wanderers | 2 | 1 | 0 | 1 | 0 | 0 | 0 | 0 |
 Auckland | 2 | 0 | 0 | 2 | 0 | 0 | 0 | 0 |
 Shamrock Rovers | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
 Melbourne City | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 |
 Cork City | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 |
 Newcastle Jets | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 |
 Shelbourne | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 |
 Brisbane Strikers | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 |
 Derry City | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 |
 Brisbane Roar | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
 St Patrick's | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 |
Player stats against each opponent national team
| Team | MP | W | D | L | G | A | ||
|---|---|---|---|---|---|---|---|---|
 Vanuatu | 2 | 2 | 0 | 0 | 0 | 0 | 0 | 0 |
 Solomon Islands | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
 Tahiti | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
 Brazil U17 | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 |
 United States U23 | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 |
 Canada U17 | 1 | 1 | 0 | 0 | 0 | 1 | 0 | 0 |
 Guinea U23 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
Oskar van Hattum finished the 2025 Premier Division season with 1 assist and no goals from 12 appearances (440 minutes) — 0.2 goal involvements per 90. His average match rating for that season computes to 6.77.
Season ratings peak at 7.04 in 2023/2024, A-League Men and bottom out at 6.57 in 2022/2023. His last two rated seasons average 0.28 above his earlier career level — an upward curve.
