Sergio Santn made his official debut on July 18, 1980,  he represented his native country and played club football for Danubio which was founded by European brothers.
Having made his official debut on July 18, 1980 against Peru (2-2), Santin obtained a total number of 18 international caps for the Uruguay national football team. Santin played club football for Danubio and Penarol in Uruguay and Cucuta Deportivo, Atletico Nacional, Independiente Medellin and America de Cali in Colombia 
