| Season | League | Apps | Min | Goals | Assists | G+A / 90 | Rating |
|---|---|---|---|---|---|---|---|
| 2019/2020 | Super League (Switzerland) | 8 | 278 | 0 | 0 | 0 | 6.5 |
| 2020/2021 | Super League (Switzerland) | 15 | 450 | 1 | 0 | 0.2 | 6.78 |
| 2021/2022 | Super League (Switzerland) | 9 | 313 | 0 | 1 | 0.29 | 6.86 |
| 2022/2023 | Super League (Switzerland) | 13 | 427 | 1 | 1 | 0.42 | 6.58 |
| 2023/2024 | Challenge League | 27 | 2207 | 0 | 2 | 0.08 | 7.33 |
| 2024/2025 | Challenge League | 24 | 1853 | 4 | 5 | 0.44 | 7.22 |
| 2025/2026 | Challenge League | 33 | 2535 | 6 | 4 | 0.36 | 7.17 |
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 2026-07-25
Player stats against each opponent club
| Team | MP | W | D | L | G | A | ||
|---|---|---|---|---|---|---|---|---|
 Stade Nyonnais | 9 | 6 | 0 | 3 | 1 | 0 | 2 | 0 |
 Aarau | 7 | 3 | 0 | 4 | 2 | 0 | 0 | 0 |
 Neuchâtel Xamax | 6 | 3 | 0 | 3 | 2 | 0 | 0 | 0 |
 Wil | 6 | 2 | 2 | 2 | 0 | 1 | 1 | 0 |
 Bellinzona | 5 | 3 | 0 | 2 | 0 | 1 | 1 | 0 |
 Thun | 5 | 0 | 2 | 3 | 0 | 0 | 1 | 1 |
 Étoile Carouge | 5 | 1 | 3 | 1 | 3 | 0 | 1 | 0 |
 Stade Lausanne-Ouchy | 4 | 1 | 1 | 2 | 0 | 0 | 0 | 0 |
 Vaduz | 4 | 0 | 4 | 0 | 0 | 0 | 0 | 0 |
 Sion | 3 | 1 | 1 | 1 | 0 | 0 | 0 | 0 |
 Yverdon Sport | 3 | 2 | 0 | 1 | 0 | 0 | 0 | 0 |
 Rapperswil-Jona | 3 | 2 | 1 | 0 | 1 | 1 | 1 | 0 |
 Linfield | 2 | 2 | 0 | 0 | 0 | 0 | 0 | 0 |
 FC Schaffhausen | 2 | 0 | 2 | 0 | 0 | 0 | 0 | 0 |
 Qarabağ | 2 | 0 | 1 | 1 | 0 | 0 | 0 | 0 |
 Feyenoord | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 |
 Hearts | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
 Zürich | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 |
 Servette | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
 Luzern | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 |
Player stats against each opponent national team
| Team | MP | W | D | L | G | A | ||
|---|---|---|---|---|---|---|---|---|
 Belarus U19 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
 Andorra U19 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
 Spain U19 | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 |
Stephan Seiler closed the 2025/2026 Challenge League campaign on 6 goals and 4 assists from 33 outings (2,535 minutes) — 0.36 goal involvements per 90. GioScore's computed rating for the season averages 7.17.
His league record spans 7 seasons (2019–2025) across 5 clubs. At his best he averaged 7.33 in 2023/2024, Challenge League; at his worst, 6.5 in 2019/2020. The trend line rises: his two most recent rated seasons sit 0.39 above his prior career average.
