Atletico Madrid will end 2020 top of La Liga after beating Getafe at the Wanda Metropolitano.
Luis Suarez headed a first-half winner to hand Atletico manager Diego Simeone victory in his 500th game in charge of the club.
Atletico are two points clear of rivals and defending champions Real Madrid, who were held to a 1-1 draw at Elche.
Simeone's side, who are chasing a first league title since 2014, have won 301 matches under his tenure.
The club parted ways with striker Diego Costa on Tuesday after the Spain international fell out of favour at the club.
Suarez and Joao Felix have been preferred to Costa up front this season, and Simeone will feel vindicated in his decision as the former struck the decisive blow against Getafe.
Getafe, who challenged for a top-four finish in the previous two seasons, are down in 14th place on 17 points, two above the relegation zone.
"It's not easy to play well in every game and our opponents also played well and needed to pick up points. But even on days when you do not play well, you have to win," said Diego Simeone.