Deportivo San Martin moved closer to winning the 2008 Peruvian championship by losing 1-0 to Cesar Vallejo, the defeat proving to be beneficial thanks to the intricacies of the tournament's format.
PARAGUAY
Libertad clinched the Clausura championship to continue their recent dominance of Paraguayan football.
Colombian Vladimir Marin set them on their way by scoring from a free kick and a header in a four-minute spell midway through the first half.
Jorge Cacares headed one back for Sol in the 33rd minute, the refereeing ruling that the ball crossed the line before being cleared by goalkeeper Victor Centurion.
Victor Caceres and Manuel Maciel added further goals in the second half.
Libertad finished with 44 points from 22 games, one ahead of Guarani whose 2-0 win over 12 de Octubre was in vain, although it guaranteed them a place in next year's South American Libertadores Cup.
Cerro Porteno and Olimpia, traditionally the country's two big clubs, finished third and seventh respectively after another disappointing season.
Libertad previously won the 2006 and 2007 titles when only one championship was held per season. This year, the Paraguayan FA changed the system to two separate championships known as the Apertura and Clausura and Libertad won both.
PERU
Deportivo San Martin fielded a reserve team against Cesar Vallejo and lost 1-0, but the result took them closer to winning the 2008 championship.
San Martin have already won the second stage of the championship with three matches to spare and are now completing their fixtures.
They are due to face first-stage winners Universitario in the end-of-season final. However, if Universitario fail to finish in the top seven of the second stage, they will lose the right to play the final and hand San Martin the title.
Universitario began the weekend's games in tenth place, two points behind Cesar Vallejo, so that if San Martin won their game, it would have meant they were helping Universitario's cause.
In the event, Universitario, who had complained bitterly at San Martin's decision to field reserves, dropped to 11th after being held 0-0 by relegated Sport Boys.
They now need an improbable combination of results next Sunday, including victory for San Martin over seventh-placed Jose Galvez.
In another game, Alianza Lima, one of the country's biggest clubs, guaranteed first-division survival with a 1-0 win over arch-rivals Sporting Cristal.
ECUADOR
Barcelona fans protested angrily after their team were held 1-1 by El Nacional on the final day of the championship and missed out on a place in next year's Libertadores.
Media reports said around 100 angry fans tried to break into the dressing-room after the game, forcing the play
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