| Season | Team | Competition | MP | G | A | Rating | ||
|---|---|---|---|---|---|---|---|---|
| 2021/2022 | Vejle | Superliga | 0 | 0 | 0 | 0 | 0 | – |
| 2021 | Mariehamn | Veikkausliiga | 24 | 2 | 0 | 5 | 0 | – |
| 2020 | HIFK | Veikkausliiga | 21 | 1 | 0 | 3 | 0 | – |
| 2019 | HIFK | Veikkausliiga | 23 | 4 | 0 | 1 | 0 | – |
| 2018 | Mariehamn | Veikkausliiga | 27 | 0 | 0 | 4 | 0 | – |
| 2017 | Mariehamn | Veikkausliiga | 20 | 1 | 0 | 2 | 0 | – |
| 2016 | Åland | Kakkonen | 17 | 3 | 0 | 0 | 0 | – |
| 2016 | Mariehamn | Veikkausliiga | 1 | 0 | 0 | 0 | 0 | – |
| 2015 | Mariehamn | Veikkausliiga | 2 | 0 | 0 | 0 | 0 | – |
| Total | 135 | 11 | 0 | 15 | 0 | – | ||
| Date | From | To | Type | |
|---|---|---|---|---|
| 01 Jan 2022 | Mariehamn | Vejle | N/A | |
| 01 Jul 2021 | Vejle | Mariehamn | Loan | |
| 01 May 2021 | HIFK | Vejle | Free | |
| - | Mariehamn | HIFK | Free |
J. Mattsson career history shows progression across clubs and competitions, including club timeline, national team appearances and overall career totals.