Player stats against each opponent club
| Team | MP | W | D | L | G | A | ||
|---|---|---|---|---|---|---|---|---|
 Prat | 2 | 1 | 0 | 1 | 0 | 0 | 0 | 0 |
 L'Hospitalet | 2 | 0 | 1 | 1 | 0 | 0 | 2 | 0 |
 Poggibonsi | 2 | 0 | 1 | 1 | 0 | 0 | 0 | 0 |
 Amiternina | 2 | 0 | 1 | 1 | 0 | 0 | 0 | 0 |
 Olympia Agnonese | 2 | 1 | 0 | 1 | 0 | 0 | 0 | 0 |
 Folgore Veregra | 2 | 1 | 1 | 0 | 0 | 0 | 0 | 0 |
 Manresa | 2 | 0 | 0 | 2 | 0 | 0 | 0 | 0 |
 Grama | 2 | 0 | 2 | 0 | 0 | 0 | 1 | 0 |
 Girona II | 2 | 1 | 0 | 1 | 0 | 0 | 1 | 0 |
 Reddis | 2 | 1 | 0 | 1 | 0 | 0 | 1 | 0 |
 Real Oviedo | 1 | 0 | 1 | 0 | 0 | 0 | 1 | 0 |
 Reus Deportiu | 1 | 0 | 0 | 1 | 0 | 0 | 1 | 0 |
 Ontinyent | 1 | 0 | 0 | 1 | 0 | 0 | 1 | 0 |
 Europa | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
 Badalona | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 |
 Olímpic de Xàtiva | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 |
 Sant Andreu | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 |
 Sambenedettese | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 |
 Pobla Mafumet | 1 | 1 | 0 | 0 | 0 | 0 | 1 | 0 |
 Lleida Esportiu | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 |
Óscar Sierra plays as a defender for Montañesa. Óscar Sierra has scored 19 goals in 330 professional appearances across 7 clubs. Óscar Sierra brings experience and reliability to the backline with 330 professional appearances under his belt. Among the clubs he has represented — Montañesa, San Cristobal, Vilafranca, L'Hospitalet — Óscar Sierra was most prolific at Prat, where he scored 6 goals in 113 appearances. Óscar Sierra stands 175 cm tall, weighs 66 kg.
Óscar Sierra's professional career spans from 2011 to 2025, a period of roughly 14 seasons over which he has amassed 330 appearances spread across 7 clubs. With 19 goals and 0 assists recorded across that span, his record reflects a sustained contribution at the highest level.
His most productive season in attacking terms came in 12/13 with Prat, when he registered 6 goals and 0 assists in 79 matches, playing 3676 minutes. That campaign stands out as one of the high points of his output.
In his most recent recorded season (24/25) at Montañesa, Óscar Sierra played 9 matches, scoring 1 goals and providing 0 assists.
Among the notable milestones of his career, Óscar Sierra has passed the 300-appearance milestone.
| Club | Period | Apps | Goals | Assists | Minutes | YC | RC | Rating |
|---|---|---|---|---|---|---|---|---|
| Prat | 2012/2013 - 2013/2014 | 113 | 6 | 0 | 6676 | — | — | — |
| San Cristobal | 2019/2020 - 2023/2024 | 84 | 6 | 0 | 6977 | — | — | — |
| Gramenet | 2010/2011 | 47 | 4 | 0 | 2102 | — | — | — |
| L'Hospitalet | 2015/2016 | 35 | 0 | 0 | 2613 | — | — | — |
| Vilafranca | 2018/2019 | 33 | 2 | 0 | 2913 | — | — | — |
| Montañesa | 2024/2025 - now | 9 | 1 | 0 | 450 | — | — | — |
| Folgore Veregra | 2015/2016 | 9 | 0 | 0 | 0 | — | — | — |
| Total | 330 | 19 | 0 | 21731 |
| Season | Club | Apps | Goals | Assists | Minutes | YC | RC | Rating |
|---|---|---|---|---|---|---|---|---|
| 24/25 | Montañesa | 9 | 1 | — | 450 | 6 | 0 | — |
| 23/24 | San Cristobal | 30 | 1 | — | 2271 | 11 | 0 | — |
| 22/23 | San Cristobal | 30 | 4 | — | 2577 | 10 | 0 | — |
| 19/20 | San Cristobal | 24 | 1 | — | 2129 | 9 | 0 | — |
| 18/19 | Vilafranca | 33 | 2 | — | 2913 | 9 | 0 | — |
| 15/16 | L'Hospitalet | 35 | 0 | — | 2613 | 8 | 0 | — |
| 15/16 | Folgore Veregra | 9 | 0 | — | 0 | 0 | 0 | — |
| 13/14 | Prat | 34 | 0 | — | 3000 | 13 | 0 | — |
| 12/13 | Prat | 79 | 6 | — | 3676 | 29 | 0 | — |
| 10/11 | Gramenet | 47 | 4 | — | 2102 | 10 | 0 | — |
