Studying to be a lawyer, Sañudo was prolific in high school and college tournaments which prompted him to sign with Alavés in 1931.
[1] Sañudo returned to Torrelavega in 1934 after he finished his studies, and was approached to join Real Madrid.
He signed professionally, and was a mainstay at the team helping them win the 1936 Copa del Presidente de la República.
He participated in the biggest Real Madrid win over their rivals FC Barcelona, an 8–2 victory in 1935 where he scored 4 goals.
Real Madrid and Atlético Madrid tried to sign him after the war broke out, but he returned to Torrelavega to tend to his family business and played amateurly for Torrelavega.