Belgian Club : RFC Seraing – 1986 – 10 matches, 1 goal
Previous Clubs : Lokomotiva Košice (SLK), Dukla Praag (CZE), Lokomotiva Košice (SLK)
Later Clubs : FC Bourges (FRA), Lokomotiva Košice (SLK)
International : 55 A-caps Czechoslovakia, 9 goals
Jan Kozak made his appearance at Seraing when he was 32 years old. The robust midfielder had already had an impressive career at that time: he finished third with Czechoslovakia at the European Championships in 1980 and won the trophy of Czechoslovakian player of the year in 1981. A certain Antonín Panenka had won that same trophy the year before. That season he would also win the cup with Dukla Prague and the following year the Czechoslovakian title. He missed out on the 1982 World Cup due to an injury.
In January 1986 he made his first move to a foreign club. RFC Seraing was a team in need and even with Kozak they barely managed to avoid the relegation. In 1987, and after only 10 games, Kozak was gone again. He went to Bourges in the French Ligue 2 and RFC Seraing followed suit by relegating to the Belgian Second Division.
After one successful year at Bourges he returned to Lokomotiva where he became a player/trainer. He trained several Slovakian teams before becoming the national coach of Slovakia in 2013. Under his leadership Slovakia was able to qualify for a major tournament for the first time: the European Championships in 2016. At those European Championships, Slovakia managed to advance out of a group with Wales, England and Russia but in the first knock-out round Germany turned out to be far too strong. In 2018, after a defeat against the Czech Republic and a conflict with the players, he resigned.