Barcelona came from behind to secure a 3-1 win over rock-bottom Almeria that preseves their eight-point advantage at the top of the table.
Barca had briefly appeared to be in danger of a shock defeat when they were caught on the counter and Corona gave the visitors the advantage.
The hosts were soon back on level terms, though, as goalkeeper Diego Alves was penalised for a rash tackle on David Villa in the area and Lionel Messi converted the resulting spot kick.
Youth product Thiago Alcantara then scored his second goal for the club to make it 2-1 shortly afterwards, and Messi wrapped up the scoring in injury time as he punished a poor piece of defending.
Kaka scored two penalties as a much-changed Real Madrid proved they will not give up their title bid without a fight after claiming an impressive 3-0 victory over Athletic Bilbao at San Mames.
Kaka netted from the spot at the start of either half following fouls on Angel Di Maria while Cristiano Ronaldo climbed off the bench to net Madrid's third midway through the second period to complete the scoring.
Sevilla's hopes of breaking into the top four were effectively ended with a 2-2 draw at Mallorca.
Overhauling the nine-point gap between themselves and fourth-placed Villarreal was always going to be a hard enough task, but this loss of points means their hopes are now virtually non-existent.
Akihiro Ienaga gave Mallorca the lead with a 16th-minute header, only for Alvaro Negredo to level from the spot. A moment of brilliance from Jonathan De Guzman then restored Mallorca's lead before a glaring error from home keeper Dudu Aouate allowed Ivan Rakitic to level for a second time.