Atletico Madrid have won LaLiga for the 11th time in their history.
Diego Simeone's side beat Real Valladolid 2-1 on Saturday to clinch their first top-flight crown since 2013-14 and just their third in 25 years.
Previous champions Real Madrid, who fought back to beat Villarreal by the same scoreline in their final match of 2020-21, finished second in the table, with Barcelona securing third by beating relegated Eibar and Sevilla – who play on Sunday – set to end the season fourth.
Atleti are the only team to have won Spain's top league other than Madrid or Barca since Valencia claimed their sixth title in 2003-04.
Simeone is just the third coach to win two LaLiga titles for the club, following Ricardo Zamora (1939-40 and 1940-41) and Helenio Herrera (1949-50 and 1950-51).
The result also meant Valladolid were relegated to the second tier.
It is the fifth LaLiga title in the career of striker Luis Suarez, who finished as Atleti's top scorer this season with 21 goals in 32 league games.
The 34-year-old only joined Atleti last year after being deemed surplus to requirements at Barca.
Former Madrid midfielder Marcos Llorente was also key to Atleti's title triumph. With 12 goals and 11 assists, he is the first Atletico player since Diego Forlan (32 goals, 10 assists) in 2008-09 to record a 'double-double' of at least 10 goals and assists in the same season.
Llorente has epitomised the way Atleti have performed beyond expectations this season. His 12 goals have come from just 3.41 expected goals (xG), and his 11 assists from 5.38 expected assists (xA). The difference in each of those figures is the highest among LaLiga players in 2020-21.