The Czech First League, known as the Fortuna liga for sponsorship reasons, is a Czech professional league for football clubs. At the top of the Czech football league system, it is the country's primary football competition. Seasons typically run from August to May, most games are played on Saturdays and Sundays with few games played on Fridays. All Fortuna liga clubs qualify for the Czech Cup. The history of the Czech football league began with its reorganization for the 1993–94 season following the dissolution of Czechoslovakia and therefore the league became the successor of the Czechoslovak League. Thirty-five clubs have competed in the Fortuna liga since its founding. Sparta Prague has won the title 12 times, the most among Czech clubs. Other clubs that were crowned as champions are Slavia Prague, Slovan Liberec, Baník Ostrava and Viktoria Plzeň, who are the reigning champions. Based on performances in European competitions over the past five years, the league is ranked 17th in the UEFA league rankings for the 2021–22 season. Competition format In the inaugural season, two points were awarded for a win, before switching to three points for a win in 1994. Teams are ranked by total points, in the case of two or more teams finishing with equal points, the head-to-head record between the teams is used for ranking, counting points in relevant games, then goal difference and then goals scored. 1993–2018 There were 16 clubs in the league. During the course of a season, which lasted from August to May, each club played the others twice, once at their home stadium and once at that of their opponents, for a total of 30 games. New format The 2018–19 season was the first season played with the new competition format. After the regular season, which lasts from July to April and involves each team playing every other team home and away, the teams are divided into three groups. The top six teams enter the championship group, with the first-placed team being named champions. The teams play against each other only once, playing total of five additional matches. Points earned are added to the points from the regular season. The teams 7th–10th position after 30 games take part in the Europa League play-offs. The best of them play against the fourth-placed or fifth-placed (it depends on the result of the Czech Cup and on the Czech coefficient rankings between European football