| Season | League | Apps | Min | Goals | Assists | G+A / 90 | Rating |
|---|---|---|---|---|---|---|---|
| 2016/2017 | Segunda B - Group 1 | 39 | 2951 | 2 | 0 | 0.06 | — |
| 2017/2018 | La Liga 2 (Spain) | 5 | 250 | 0 | 0 | 0 | 6.76 |
| 2018/2019 | La Liga 2 (Spain) | 2 | 35 | 0 | 0 | — | 6.22 |
| 2019/2020 | Segunda B - Group 3 | 26 | 2340 | 1 | 0 | 0.04 | — |
| 2020/2021 | La Liga 2 (Spain) | 34 | 2548 | 0 | 0 | 0 | 6.9 |
| 2021/2022 | La Liga 2 (Spain) | 26 | 2070 | 3 | 0 | 0.13 | 6.83 |
| 2022/2023 | La Liga 2 (Spain) | 25 | 1837 | 1 | 0 | 0.05 | 7.04 |
| 2023/2024 | La Liga 2 (Spain) | 32 | 1964 | 2 | 0 | 0.09 | 6.84 |
| 2024/2025 | La Liga 2 (Spain) | 18 | 1618 | 0 | 0 | 0 | 7.18 |
| 2024/2025 | Superliga (Romania) | 8 | 588 | 0 | 0 | 0 | 6.89 |
| 2025/2026 | La Liga 2 (Spain) | 40 | 3585 | 2 | 1 | 0.08 | 6.92 |
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 | ||
|---|---|---|---|---|---|---|---|---|
 Sporting Gijón | 13 | 4 | 4 | 5 | 0 | 0 | 3 | 1 |
 Real Zaragoza | 11 | 3 | 5 | 3 | 0 | 0 | 2 | 0 |
 Mirandés | 11 | 5 | 1 | 5 | 1 | 0 | 2 | 0 |
 Real Oviedo | 10 | 3 | 2 | 5 | 0 | 0 | 2 | 0 |
 Málaga | 10 | 4 | 3 | 3 | 0 | 0 | 1 | 0 |
 Albacete | 9 | 4 | 2 | 3 | 0 | 0 | 1 | 0 |
 FC Cartagena | 9 | 5 | 3 | 1 | 0 | 0 | 3 | 0 |
 Huesca | 8 | 3 | 2 | 3 | 1 | 0 | 2 | 0 |
 Leganés | 8 | 3 | 2 | 3 | 0 | 0 | 2 | 1 |
 SD Eibar | 7 | 3 | 1 | 3 | 0 | 0 | 1 | 1 |
 Almería | 7 | 3 | 1 | 3 | 0 | 0 | 3 | 0 |
 Tenerife | 7 | 0 | 3 | 4 | 0 | 0 | 3 | 0 |
 Las Palmas | 7 | 4 | 3 | 0 | 0 | 0 | 1 | 0 |
 Alcorcón | 6 | 3 | 2 | 1 | 0 | 0 | 0 | 0 |
 Lugo | 6 | 1 | 2 | 3 | 1 | 0 | 2 | 0 |
 Cádiz | 5 | 2 | 3 | 0 | 1 | 0 | 0 | 0 |
 Ponferradina | 5 | 4 | 0 | 1 | 0 | 0 | 1 | 0 |
 Racing Santander | 5 | 2 | 0 | 3 | 0 | 0 | 3 | 0 |
 Real Valladolid | 4 | 2 | 0 | 2 | 0 | 0 | 1 | 0 |
 Espanyol | 4 | 0 | 2 | 2 | 1 | 0 | 1 | 0 |
Grego Sierra's 2025/2026 La Liga 2 (Spain) season produced 2 goals and 1 assist across 40 appearances (3,585 minutes) — 0.08 goal involvements per 90. GioScore's computed rating for the season averages 6.92.
2024/2025 stands as his highest-rated season (7.18, La Liga 2 (Spain)), with 2017/2018 the weakest (6.76).
