During the
Second World War, Giambelli worked as a laborer at the
Magneti Marelli of
Sesto San Giovanni, and work breaks, playing football in the field company, to be noticed by some scout of the
A.C. Pro Sesto. After the war, and after the junior teams, played for a year in Olginatese (the
Olginate team), just outside
Lecco. In 1949, went to Pro Lissone, and then finish in
Monza Soccer team with whom he won the championship of the C series coming to
Serie B. Giambelli remained 5 years in
Monza, but at the age of 27 years decided to discontinue football career and to use the degree of surveyor dedicated to the construction. ==References==