Five-time Ballon d'Or winner Cristiano Ronaldo scored twice as Real Madrid put in a sensational first-half performance to blow away Sevilla.
Real - only above fifth-placed Sevilla on goal difference before kick-off - led through Nacho's close-range effort.
Ronaldo had only scored two La Liga goals all season before converting Marco Asensio's through ball and then scoring a penalty.
Toni Kroos finished off a great move and set up Achraf Hakimi for the fifth.
With all the goals coming in the first half, Real eased up after the break and Sevilla never threatened any kind of comeback.
On Wednesday, Ronaldo scored in a 3-2 win against Borussia Dortmund to become the first player to score in all six Champions League group games in a season, netting nine in those six.
The next day, he won his fifth Ballon d'Or - the award for the best player in the world, taking him level with Barcelona and Argentina forward Lionel Messi's all-time record.
And on Friday, his manager Zinedine Zidane - himself the 1998 Ballon d'Or winner - said Ronaldo was the "best player in the history of football".
But in La Liga this season, he has struggled - scoring only twice in 10 league games - despite his free-scoring European exploits.
But those problems were forgotten on Saturday as he finished Asensio's brilliant pass and then scored a penalty - which squeezed under keeper Sergio Rico - after Jesus Navas' handball.
He even won the ball in his own half to set up the move for Kroos' fourth goal and had a hand in Hakimi's fifth.