| Season | League | Apps | Min | Goals | Assists | G+A / 90 | Rating |
|---|---|---|---|---|---|---|---|
| 2012/2013 | Bundesliga | 16 | 1232 | 0 | 0 | 0 | 6.34 |
| 2013/2014 | Bundesliga | 23 | 2053 | 0 | 0 | 0 | — |
| 2014/2015 | Bundesliga | 6 | 540 | 0 | 0 | 0 | — |
| 2015/2016 | Bundesliga | 13 | 1170 | 0 | 0 | 0 | — |
| 2016/2017 | Bundesliga | 20 | 1800 | 0 | 0 | 0 | — |
| 2017/2018 | Bundesliga | 34 | 3060 | 0 | 0 | 0 | 7.08 |
| 2018/2019 | Bundesliga | 26 | 2296 | 0 | 0 | 0 | 7.04 |
| 2019/2020 | Bundesliga | 26 | 2340 | 0 | 0 | 0 | 6.9 |
| 2020/2021 | Bundesliga | 32 | 2880 | 0 | 0 | 0 | 7.1 |
| 2021/2022 | Bundesliga | 28 | 2520 | 0 | 0 | 0 | 7.02 |
| 2022/2023 | Bundesliga | 34 | 3060 | 0 | 1 | 0.03 | 7.1 |
| 2023/2024 | Bundesliga | 25 | 2250 | 0 | 0 | 0 | 7.12 |
| 2024/2025 | Pro League | 33 | 2970 | 0 | 0 | 0 | 7.11 |
| 2025/2026 | Pro League | 32 | 2855 | 0 | 0 | 0 | 6.94 |
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 2026-07-30
Player stats against each opponent club
| Team | MP | W | D | L | G | A | ||
|---|---|---|---|---|---|---|---|---|
 Borussia Mönchengladbach | 23 | 7 | 8 | 8 | 0 | 0 | 1 | 0 |
 Eintracht Frankfurt | 21 | 12 | 3 | 6 | 0 | 0 | 1 | 0 |
 FC Bayern München | 21 | 0 | 2 | 19 | 0 | 0 | 0 | 0 |
 Borussia Dortmund | 20 | 2 | 3 | 15 | 0 | 0 | 0 | 0 |
 Schalke 04 | 19 | 6 | 6 | 7 | 0 | 0 | 0 | 0 |
 FSV Mainz 05 | 19 | 6 | 9 | 4 | 0 | 0 | 1 | 0 |
 SC Freiburg | 19 | 8 | 4 | 7 | 0 | 0 | 0 | 0 |
 Hertha BSC | 18 | 6 | 7 | 5 | 0 | 0 | 0 | 0 |
 VfB Stuttgart | 18 | 8 | 2 | 8 | 0 | 0 | 1 | 0 |
 Werder Bremen | 17 | 4 | 5 | 8 | 0 | 0 | 0 | 0 |
 FC Augsburg | 17 | 6 | 6 | 5 | 0 | 0 | 0 | 0 |
 TSG Hoffenheim | 17 | 7 | 4 | 6 | 0 | 0 | 1 | 0 |
 Bayer 04 Leverkusen | 17 | 5 | 5 | 7 | 0 | 0 | 1 | 0 |
 FC Köln | 16 | 5 | 6 | 5 | 0 | 0 | 0 | 0 |
 RB Leipzig | 14 | 4 | 4 | 6 | 0 | 0 | 2 | 0 |
 Hamburger SV | 11 | 5 | 2 | 4 | 0 | 0 | 1 | 0 |
 FC Union Berlin | 8 | 3 | 3 | 2 | 0 | 0 | 0 | 0 |
 Hannover 96 | 8 | 4 | 2 | 2 | 0 | 0 | 0 | 0 |
 Darmstadt 98 | 6 | 4 | 1 | 1 | 0 | 0 | 0 | 0 |
 VfL Wolfsburg | 5 | 1 | 1 | 3 | 0 | 0 | 0 | 0 |
Player stats against each opponent national team
| Team | MP | W | D | L | G | A | ||
|---|---|---|---|---|---|---|---|---|
 France | 5 | 0 | 0 | 5 | 0 | 0 | 0 | 0 |
 Japan | 3 | 2 | 0 | 1 | 0 | 0 | 0 | 0 |
 England | 3 | 3 | 0 | 0 | 0 | 0 | 0 | 0 |
 Italy | 3 | 0 | 1 | 2 | 0 | 0 | 0 | 0 |
 Egypt | 2 | 1 | 0 | 1 | 0 | 0 | 0 | 0 |
 Azerbaijan | 2 | 2 | 0 | 0 | 0 | 0 | 0 | 0 |
 Belarus | 2 | 2 | 0 | 0 | 0 | 0 | 0 | 0 |
 Israel | 2 | 1 | 0 | 1 | 0 | 0 | 0 | 0 |
 Netherlands | 2 | 0 | 1 | 1 | 0 | 0 | 0 | 0 |
 Estonia | 2 | 2 | 0 | 0 | 0 | 0 | 0 | 0 |
 Poland | 2 | 2 | 0 | 0 | 0 | 0 | 0 | 0 |
 Scotland | 2 | 2 | 0 | 0 | 0 | 0 | 0 | 0 |
 Czech Republic | 2 | 2 | 0 | 0 | 0 | 0 | 0 | 0 |
 Wales | 2 | 1 | 1 | 0 | 0 | 0 | 0 | 0 |
 Morocco | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 |
 Tunisia | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
 Côte d'Ivoire | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 |
 Saudi Arabia | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
 Canada | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
 Mexico | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 |
Koen Casteels featured 32 times in the 2025/2026 Pro League (2,855 minutes). GioScore's computed rating for the season averages 6.94.
Between 2012 and 2025 he accumulated 14 league seasons across 5 clubs. 2023/2024 stands as his highest-rated season (7.12, Bundesliga), with 2012/2013 the weakest (6.34).
