UPDATE 1-Soccer-Primera Liga reports

(Adds later results)

MADRID, March 1 (Reuters) - Brief reports of matches played in the Primera Liga on Sunday:

ATLETICO MADRID 4 BARCELONA 3

Sergio Aguero's dramatic winner on 89 minutes condemned the league leaders to a second straight defeat and champions Real Madrid are now just four points behind the Catalans.

Barca went 2-0 up through Thierry Henry and Lionel Messi before Diego Forlan and Aguero levelled. Henry made it 3-2 and then conceded a penalty converted by Forlan before Aguero burst through to grab the winner.

- - - -

VALENCIA 1 REAL VALLADOLID 2

Valencia's poor run of form continued and Unai Emery's side were whistled by their disgruntled home supporters as they dropped to sixth behind Atletico on goal difference.

Jonathan Sesma opened the scoring with a powerful header after six minutes, Luis Cesar Sanchez deflected a cross onto Raul Albiol and into the net for an own goal just after the half hour and Carlos Marchena pulled one back with 16 minutes left.