Player stats against each opponent club
| Team | MP | W | D | L | G | A | ||
|---|---|---|---|---|---|---|---|---|
 VIFK | 3 | 0 | 1 | 2 | 0 | 0 | 0 | 0 |
 PS Kemi | 2 | 1 | 0 | 1 | 0 | 0 | 0 | 0 |
 JJK | 2 | 0 | 1 | 1 | 0 | 0 | 0 | 0 |
 SJK Akatemia | 2 | 0 | 0 | 2 | 0 | 0 | 0 | 0 |
 Vaajakoski | 2 | 1 | 0 | 1 | 0 | 0 | 0 | 0 |
 RoPS II | 2 | 1 | 0 | 1 | 0 | 0 | 0 | 0 |
 JäPS II | 2 | 2 | 0 | 0 | 0 | 0 | 0 | 0 |
 MuSa | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 |
 OPS | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
 OLS | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 |
 P-Iirot | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
 JIPPO | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 |
 GBK | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 |
 JBK | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
 KuFu-98 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
 PK-37 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
 Futura | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 |
 KajHa | 1 | 1 | 0 | 0 | 0 | 0 | 1 | 0 |
 VPS II | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
 Ilves II | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 |
Onni Heikkinen plays as a midfielder for PPJ. Onni Heikkinen has scored 6 goals in 76 professional appearances across 2 clubs. Among the clubs he has represented — PPJ, JS Hercules — Onni Heikkinen was most prolific at JS Hercules, where he scored 5 goals in 65 appearances. Onni Heikkinen stands 184 cm tall.
Onni Heikkinen's professional career spans from 2019 to 2025, a period of roughly 6 seasons over which he has amassed 76 appearances spread across 2 clubs. With 6 goals and 0 assists recorded across that span, his record reflects a sustained contribution at the highest level.
His most productive season in attacking terms came in 21/22 with JS Hercules, when he registered 2 goals and 0 assists in 22 matches, playing 1872 minutes. That campaign stands out as one of the high points of his output.
In his most recent recorded season (24/25) at PPJ, Onni Heikkinen played 8 matches, scoring 1 goals and providing 0 assists.
| Club | Period | Apps | Goals | Assists | Minutes | YC | RC | Rating |
|---|---|---|---|---|---|---|---|---|
| JS Hercules | 2019/2020 - 2023/2024 | 65 | 5 | 0 | 3569 | — | — | — |
| PPJ | 2023/2024 - now | 11 | 1 | 0 | 90 | — | — | — |
| Total | 76 | 6 | 0 | 3659 |
| Season | Club | Apps | Goals | Assists | Minutes | YC | RC | Rating |
|---|---|---|---|---|---|---|---|---|
| 24/25 | PPJ | 8 | 1 | — | 0 | 2 | 0 | — |
| 23/24 | PPJ | 3 | 0 | — | 90 | 0 | 0 | — |
| 21/22 | JS Hercules | 22 | 2 | — | 1872 | 3 | 0 | — |
| 20/21 | JS Hercules | 15 | 1 | — | 348 | 1 | 0 | — |
| 19/20 | JS Hercules | 12 | 1 | — | 270 | 1 | 0 | — |
| 18/19 | JS Hercules | 14 | 1 | — | 923 | 0 | 0 | — |
