He was part of the Rayo Vallecano squad that won the Segunda División title in the 2020–21 season, securing promotion to La Liga. Individually, he has been recognized for his consistent performances, though major individual awards have eluded him.
Óscar Valentín is a Spanish central midfielder who has spent the majority of his career with Rayo Vallecano, helping the club gain promotion to La Liga and establish themselves in the top flight. Known for his consistency and work rate, he has been a key figure in the team's midfield since joining in 2019.
Valentín is a combative and industrious midfielder who excels at breaking up play and recycling possession. His tactical discipline and ability to read the game make him a reliable shield for the defense, though he offers limited creativity or goal threat going forward.