| Season | League | Apps | Min | Goals | Assists | G+A / 90 | Rating |
|---|---|---|---|---|---|---|---|
| — | Ekstraklasa | 1 | 90 | 0 | 0 | 0 | 7.7 |
| 2011/2012 | 1. SNL | 31 | 2731 | 0 | 0 | 0 | — |
| 2012/2013 | 1. SNL | 31 | 1794 | 0 | 0 | 0 | — |
| 2013/2014 | 1. SNL | 35 | 3035 | 4 | 0 | 0.12 | — |
| 2014/2015 | 1. SNL | 25 | 2171 | 0 | 0 | 0 | — |
| 2015/2016 | 1. SNL | 11 | 925 | 0 | 0 | 0 | — |
| 2016/2017 | Chance Liga | 3 | 243 | 0 | 0 | 0 | — |
| 2016/2017 | 1. SNL | 16 | 1440 | 0 | 4 | 0.25 | — |
| 2017/2018 | Chance Liga | 1 | 90 | 0 | 0 | 0 | — |
| 2017/2018 | 1. Division | 33 | 2926 | 2 | 0 | 0.06 | — |
| 2018/2019 | 1. HNL | 19 | 1463 | 0 | 0 | 0 | — |
| 2019/2020 | Ekstraklasa | 36 | 3091 | 0 | 7 | 0.2 | — |
| 2020/2021 | Ekstraklasa | 28 | 2422 | 0 | 2 | 0.07 | — |
| 2021/2022 | Ekstraklasa | 32 | 2802 | 1 | 7 | 0.26 | 7.23 |
| 2022/2023 | Ekstraklasa | 32 | 2872 | 2 | 8 | 0.31 | 7.45 |
| 2023/2024 | Ekstraklasa | 23 | 1723 | 0 | 4 | 0.21 | 7.2 |
| 2024/2025 | Ekstraklasa | 28 | 2455 | 2 | 8 | 0.37 | 7.57 |
| 2025/2026 | Ekstraklasa | 32 | 2707 | 4 | 3 | 0.23 | 7.13 |
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 2026-08-14
Player stats against each opponent club
| Team | MP | W | D | L | G | A | ||
|---|---|---|---|---|---|---|---|---|
 Legia Warszawa | 8 | 3 | 2 | 3 | 1 | 1 | 0 | 0 |
 Lech Poznań | 6 | 3 | 1 | 2 | 0 | 1 | 0 | 0 |
 Pogoń Szczecin | 6 | 2 | 0 | 4 | 1 | 0 | 4 | 0 |
 Lechia Gdańsk | 5 | 3 | 0 | 2 | 1 | 1 | 1 | 0 |
 Jagiellonia Białystok | 5 | 3 | 0 | 2 | 0 | 1 | 2 | 0 |
 Cracovia Kraków | 5 | 1 | 1 | 3 | 0 | 1 | 2 | 0 |
 Piast Gliwice | 5 | 3 | 1 | 1 | 3 | 0 | 1 | 0 |
 Korona Kielce | 5 | 3 | 2 | 0 | 0 | 0 | 0 | 0 |
 Ermis | 4 | 2 | 0 | 2 | 0 | 0 | 2 | 0 |
 Zagłębie Lubin | 4 | 1 | 0 | 3 | 0 | 1 | 0 | 1 |
 Katowice | 4 | 3 | 0 | 1 | 0 | 0 | 0 | 0 |
 Raków Częstochowa | 4 | 2 | 1 | 1 | 0 | 0 | 0 | 0 |
 Śląsk Wrocław | 4 | 4 | 0 | 0 | 1 | 1 | 0 | 0 |
 Alki Oroklini | 4 | 0 | 2 | 2 | 1 | 0 | 2 | 0 |
 Widzew Lodz | 4 | 2 | 1 | 1 | 0 | 1 | 0 | 0 |
 Motor Lublin | 4 | 1 | 1 | 2 | 0 | 0 | 1 | 0 |
 Doxa | 3 | 2 | 1 | 0 | 0 | 0 | 0 | 0 |
 Olympiakos | 3 | 1 | 1 | 1 | 0 | 0 | 0 | 0 |
 Arka Gdynia | 3 | 2 | 0 | 1 | 0 | 0 | 0 | 0 |
 Nea Salamis | 3 | 2 | 0 | 1 | 0 | 0 | 0 | 0 |
Player stats against each opponent national team
| Team | MP | W | D | L | G | A | ||
|---|---|---|---|---|---|---|---|---|
 Sweden | 2 | 0 | 2 | 0 | 0 | 0 | 0 | 0 |
 Norway | 2 | 0 | 0 | 2 | 0 | 0 | 0 | 0 |
 Denmark | 2 | 0 | 1 | 1 | 2 | 0 | 0 | 0 |
 Kazakhstan | 2 | 2 | 0 | 0 | 0 | 1 | 0 | 0 |
 Austria | 2 | 0 | 2 | 0 | 0 | 0 | 1 | 0 |
 Slovakia | 2 | 1 | 1 | 0 | 0 | 0 | 1 | 0 |
 Northern Ireland | 2 | 2 | 0 | 0 | 0 | 0 | 0 | 0 |
 Montenegro | 2 | 2 | 0 | 0 | 0 | 0 | 0 | 0 |
 Uruguay | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 |
 Finland | 1 | 1 | 0 | 0 | 1 | 0 | 1 | 0 |
 Bosnia and Herzegovina | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
 Armenia | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
 Argentina | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 |
 England | 1 | 0 | 1 | 0 | 0 | 0 | 1 | 0 |
 Bulgaria | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 |
 Malta | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 |
 Portugal | 1 | 1 | 0 | 0 | 0 | 0 | 1 | 0 |
 Switzerland | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 |
 Colombia | 1 | 0 | 0 | 1 | 0 | 0 | 1 | 0 |
 Hungary | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 |
Erik Janza closed the 2025/2026 Ekstraklasa campaign on 4 goals and 3 assists from 32 outings (2,707 minutes) — 0.23 goal involvements per 90. Per-match rating over the season: 7.13.
Season ratings peak at 7.57 in 2024/2025, Ekstraklasa and bottom out at 7.13 in 2025/2026.
