During an 18-year senior career, Alonso also represented Real Unión, Racing de Ferrol and Rayo Vallecano, retiring in June 1957 at the age of nearly 34 and dying at 73 in his hometown.
International career
Alonso won 12 caps for Spain, during four years. He was selected for the squad that competed in the 1950 FIFA World Cup in Brazil, appearing in all six matches for the eventual fourth-placed nation.