Deportivo Toluca F.C.
He started his career on August 11 for Deportivo Toluca F.C. in 2001 playing against Monterrey, the game had ended in a draw. He played with Toluca from 2001 through 2008 raising 3 championships. The last time Toluca were crowned champions was in the game against Cruz Azul where Sergio scored a goal in the first length of the championship.