He played for Czechoslovakia, representing his country on 63 occasions between 1966 and 1977,[1] taking part in the 1970 FIFA World Cup and winning the 1976 European Championship.

Regarded as one of the best goalkeepers of his generation in Europe in his prime, he placed third in the 1976 Ballon d'Or, and was a five-time winner of the Czechoslovak Footballer of the Year award, and a two-time winner of the European Goalkeeper of the Year award.

In his country, Viktor played for several clubs, including Dukla Prague, where he remained for 13 years, winning several titles.

[3] He was one of the brightest stars at UEFA Euro 1976, where he helped Czechoslovakia win the championship,[4] producing notable performances and key saves against the Netherlands in the semi-final, and West Germany in the final, later being named to the team of the tournament.

[1] Viktor took charge of Dukla Prague for one season as manager, in the 1990–91 Czechoslovak First League.