Defensor Sporting were crowned Uruguayan Clausura champions after beating Juventud.
Jorge Da Silva's men won 2-1 thanks to first half goals from Diego Vera and Pablo Pintos.
A Cristian Yeadian penalty halved the deficit, but the hosts could not find an equaliser and were relegated as a result.
Defensor won 11 of their 14 matches, finishing four points ahead of second-placed River Plate, who lost 2-1 to Liverpool today.
Los Violetas will now play Apertura champions Nacional for the season title while they will also compete in the Liguilla, a tournament to define which teams compete in the 2009 Copa Sudamericana and the 2010 Copa Libertadores.
The other teams in the Liguilla are Nacional, Cerro, Liverpool, River Plate and Racing.