Ronaldo has agreed to extend his contract with Real Madrid until 2008, the Spanish club announced on Tuesday.
Barcelona shook off the disappointment of their Champions League defeat by Chelsea to extend their lead in the Primera Liga to 11 points with a 2-0 defeat of Athletic Bilbao.
The Real Madrid midfielder has ruled himself out of the match because of an ankle injury.
Sevilla knocked Barcelona off the top of the Primera Liga after goals from Frederic Kanoute and Adriano Correia earned a 2-0 home win over Osasuna on Sunday.
A Ronaldinho double and solo goal from Lionel Messi gave Barcelona a 3-1 home win against high-flying Sevilla.
A superb late strike from Xavi allowed the Primera Liga leaders to snatch a 2-1 win away to a determined Albacete.
The Brazilian World Cup winner tore a muscle in his right thigh and will almost certainly miss Barcelona's clash with arch rivals Real Madrid.
The trio make up the shortlist for the 2004 World Player of the Year award.\n
Primera Liga leaders Barcelona produced a sparkling display of fluent, attacking football to outclass arch-rivals Real Madrid.
Reigning champions Real Madrid took advantage of Valencia's defeat against Deportivo to move up to second.
Real Madrid head to the scene of some bitter memories this week when they travel to the Canary Islands to play second division Tenerife in the King's Cup.
Jaime Orti stepped down from the post after three successful years at the Spanish club.
27-year-old Manuel Almunia would join Arsenal subject to a brief trial at the club.
England's captain says he has nothing to prove to sceptics at coming tournament.
'It has been a terrible end to the season,' said the Brazilian ace.
The Real Madrid striker pulled up in training because of pain in his left thigh.
The Brazilian ruled himself out of Real's Champions League game against Bayern Munich next week and said he feared a lengthy absence.
A last-gasp strike from Ronaldo helped his side snatch a 3-2 win at Valladolid.