The Bulgarian First League is the top professional football division in Bulgaria. Established in 1924, it features teams from across the country competing for the championship title. The league operates on a system of promotion and relegation with the Bulgarian Second League. Each season, the league consists of 14 teams that play a round-robin format, where each team faces every other team twice. The team with the most points at the end of the season is crowned the champion, while the bottom teams face relegation to the lower division.