LigaPro is the top professional football league in Portugal, officially known as the Primeira Liga. It features 18 teams competing annually for the championship title. The league operates on a system of promotion and relegation with the LigaPro 2, the second tier of Portuguese football. Founded in 1934, LigaPro has a rich history and is known for its competitive nature. The league has produced many talented players who have gone on to achieve success in international football. Matches are typically held from August to May, culminating in a championship playoff to determine the winner.