The Warsaw club finished the 2020/2021 campaign five points ahead of Raków and 12 points ahead of Pogoń Szczecin to defend their title in a season marred by the coronavirus pandemic.
In the final round of matches on Sunday, Legia, managed by Czesław Michniewicz, won 1-0 against Podbeskidzie Bielsko-Biała at home, while Raków posted a comfortable 3-1 away win against Pogoń.
Legia had secured its 15th Polish Ekstraklasa championship with three games to spare, after Raków had to settle for a goalless draw with Jagiellonia Białystok at the end of last month.
Legia Warsaw coach Czesław Michniewicz. Photo: PAP/Leszek Szymański
Polish football stadiums reopened to spectators at 25 percent capacity on Saturday as the country eased its coronavirus lockdown measures.
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Source: TVP Sport, Canal+, IAR, PAP