Mr. Kotleba`s basketball career was the following:

1960 – 1968 – a player

1968 – 1970 – a coach

1970 – 1975 – a team manager

1963 – 1975 – a referee on national level,

1975 – 1989 – an international referee (FIBA)

Mr. Kotleba became a Central Board member of Slovak basketball federation in 1972, and since 1981 he was a Central Board member of Czechoslovak basketball federation.

Since 1989 till now Mr. Kotleba is a FIBA full-time staff. ( FIBA Sport Director )

Mr.Kotleba officiated 4015 games, three Olympic Games ( two finals), five World Championships, twelve European Champioships, six championships of other continents and ten European Club Competitions finals.

As a commissioner he officiated five Olympic Games, twenty two World Championships, twenty one European Championships and about 100 European Club Competitions games.

Besides as a FIBA lecturer he participated in 96 referee clinics in 57 countries of five continents.