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- First Name : Samuel
- Last Name : Castillejo Azuaga
- Team : Johor Darul Ta'zim
- Nationality : Spain
- Position : Midfielder
- Birth Place : Málaga
- Birth Country : Spain
- Birthdate : 18/01/1995
- Age : 30
- Height : 182 cm
- Weight : 67 kg
| Team | Season |  |
 |
 |
 |
 |
 |
 |
|---|---|---|---|---|---|---|---|---|
| Johor Darul Ta'zim | 2024/2025 | |||||||
| Valencia | 2024/2025 | 0 | 0 | 0 | 0 | 0 | ||
| Sassuolo | 2023/2024 | 530 | 2 | 0 | 0 | 0 | 6.617647 | |
| Valencia | 2023/2024 | 0 | 0 | 0 | 0 | 0 | ||
| Valencia | 2022/2023 | 1370 | 7 | 0 | 0 | 4 | 6.824000 | |
| AC Milan | 2021/2022 | 124 | 0 | 0 | 0 | 0 | 6.750000 | |
| AC Milan | 2020/2021 | 1175 | 5 | 0 | 0 | 1 | 6.653571 | |
| AC Milan | 2019/2020 | 1215 | 3 | 0 | 1 | 3 | 2 | 6.919047 |
| AC Milan | 2018/2019 | 1006 | 3 | 0 | 0 | 2 | 4 | 6.789655 |
| Villarreal | 2017/2018 | 2084 | 4 | 0 | 0 | 5 | 6 | 6.953333 |
| Villarreal | 2016/2017 | 2050 | 2 | 0 | 0 | 3 | 2 | 6.775757 |
| Villarreal | 2015/2016 | 1698 | 4 | 0 | 0 | 1 | 1 | 6.574074 |
| Malaga | 2014/2015 | 2351 | 5 | 0 | 0 | 1 |
