| Season | Team | Competition | MP | G | A | Rating | ||
|---|---|---|---|---|---|---|---|---|
| 2020/2021 | Celta Vigo | Copa del Rey | 0 | 0 | 0 | 0 | 0 | – |
| 2019/2020 | Celta Vigo | Copa del Rey | 2 | 0 | 0 | 0 | 0 | 7.0 |
| 2018/2019 | Celta Vigo | Copa del Rey | 1 | 0 | 0 | 0 | 0 | 6.3 |
| 2017/2018 | Celta Vigo | Copa del Rey | 4 | 0 | 0 | 0 | 0 | 6.7 |
| 2016/2017 | Celta Vigo | Copa del Rey | 8 | 0 | 0 | 1 | 0 | 7.0 |
| 2015/2016 | Celta Vigo | Copa del Rey | 1 | 0 | 0 | 0 | 0 | – |
| 2014/2015 | Celta Vigo | Copa del Rey | 0 | 0 | 0 | 0 | 0 | – |
| 2013/2014 | Celta Vigo | Copa del Rey | 1 | 0 | 0 | 0 | 0 | – |
| 2012/2013 | Celta Vigo | Copa del Rey | 4 | 0 | 0 | 0 | 0 | – |
| 2011/2012 | Celta Vigo | Copa del Rey | 4 | 0 | 0 | 1 | 0 | – |
| 2010/2011 | Celta Vigo | Copa del Rey | 0 | 0 | 0 | 0 | 0 | – |
| Total | 25 | 0 | 0 | 2 | 0 | – | ||
Sergio Álvarez career history shows progression across clubs and competitions, including club timeline, national team appearances and overall career totals.