Polska Liga Koszykówki (PLK) (English: Polish Basketball League) is a professional men's club basketball league in Poland. It constitutes the first and highest-tier level of the Polish league pyramid. The winning team of the final round are crowned the Polish Champions of that season. It began in 1947–48, with the name of I Liga, and was originally organized by the Polish Basketball Association. The league changed to its current form, beginning with the 1997–98 season, after the Polska Liga Koszykówki SA, PLK SA (the Polish Basketball League Joint-stock company) took control over the league (the PLK SA was created in 1995). In 2000–01 season the league turned professional. The PLK, which is played under FIBA rules, currently consists of 17 teams (professional basketball's clubs). A PLK season is split into a league stage and a playoffs stage (since 1984–85 season). At the end of the league stage, the top eight teams qualify for the playoff stage. The competition Polish basketball men's championships has existed since the year 1928. Śląsk Wrocław is the record holder for most titles, with 17.