Colombia's Boyaca Chico and Deportivo Tachira of Venezuela boosted their qualification hopes in the Copa Libertadores with wins in the latest round of matches.
Group Seven hopefuls Boyaca Chico defeated Aurora from Bolivia 2-1 in Tunja and move on to the final round of games in a good position to advance to the round of 16.
After a goalless first half, Argentinian play-maker Miguel Caneo opened the scoring for hosts from the penalty spot after 49 minutes, before Marcos Perez doubled the advantage with a fine individual goal.
Chico defender Julian Mahecha was then sent off, letting the visitors back into the game but Aurora could muster only a late consolation through Cristian Fernandez.
Chico now have nine points - four less than leaders Gremio and two more than Universidad de Chile. In the decisive round the Colombians will travel to Porto Alegre while their Chilean rivals will visit Cochabamba.
Meanwhile, Venezuelan side Tachira came back from a goal behind to defeat Paraguay's Guarani and boost their own qualification hopes in Group Two.
Julian Benitez put the visitors ahead in the first half, but substitute Yonathan Del Valle equalised with an impressive long-range shot, leaving Marlon Fernandez to claim victory for the hosts.
Boca Juniors are at the top of the group with 12 points, while Tachira have nine.
Finally, in a Group Four match played in Cali, hosts America and Uruguayan representatives Defensor Sporting fought out an uninspiring goalless draw.
The result ensured the Colombians would go no further, while the team from Montevideo claimed their fifth point, two less than Independiente Medellin.
The teams will clash next week at Centenario stadium to determine who join leaders Sao Paulo of Brazil in the next stage.