Salvador, June 24 -- Colombia beat Paraguay 1-0 Sunday with a second-string team to stay perfect at the Copa America with three wins and without conceding any goals. The win also helped Argentina to advance from Group B in second place.

The only goal of the match at the Arena Fonte Nova in Salvador was scored in the 31st minute by midfielder Gustavo Cuellar.

Argentina beat Asian champion Qatar 2-0 in Porto Alegre to finish behind Colombia with four points.

Paraguay got two points and guest team Qatar ended its Copa America participation in fourth, with one point.

Colombia will have to wait for Group C to finish on Monday to know who it will play in the quarterfinals. Colombia, a team that has won the Copa America only once in 2001, ne...