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.