Brazil stormed to the quarter-finals of the Rio 2016 test event with three dominant victories ©André Motta/Brasil2016.gov.br

Host nation Brazil dominated the opening day of the Aquece Rio International Women's Rugby Sevens tournament as they reached the quarter-finals without conceding a try during their three Pool A victories at the Deodoro Olympic Park.

They were one of two unbeaten teams at the Sudamérica Rugby Women's Sevens Championship, which is doubling as a test event for the Rio 2016 Olympic Games, along with Argentina as both teams booked their place in the last eight in style.

Brazil began in ominous fashion as they thrashed Peru 59-0, before going on to record a similarly comprehensive 44-0 win against Uruguay.

Their last pool encounter yielded yet another success, their 55th consecutive triumph in the competition, as they overcame Venezuela by virtue of a 22-0 scoreline.

The hosts will take on Chile in the quarter-finals tomorrow.

Argentina also produced an excellent display on the first day of competition in Rio, finishing top of Pool B as they beat Paraguay 32-0 in their opener.

They then dispatched Chile with consummate ease as they clinched a 42-0 victory before they ousted Colombia, one of the favourites for the tournament who have already qualified for the Olympic Games, courtesy of a hard-fought 18-15 win.

The Argentinian side, who will compete in the Olympic Repechage tournament in Dublin in June along with South American counterparts Venezuela, face Peru in the quarter-finals.

The eight-team tournament is being used as a test event for the Rio 2016 Olympic Games
The eight-team tournament is being used as a test event for the Rio 2016 Olympic Games ©World Rugby

Colombia and Venezuela both finished second in their respective pools to keep their pursuit of a medal alive.

The Colombians will take on Uruguay in the last eight, while Venezuela clash with Paraguay.

The event at the Deodoro Rugby Park, which continues tomorrow, has already been hailed as a success by World Rugby head of competition and performance Mark Egan.

“This is an important milestone in our readiness for the Olympic Games,” he said.

“The venue looks great.

“The playing surface is superb and we have been able to test a number of functional areas, which is invaluable.

"The teams are telling us that they are excited to be the first to inaugurate the venue and are happy with the support that they have received.

"The next step is construction of the 15,000 capacity temporary stadium, which will begin in April.”

Rugby sevens will make its Olympic debut at this summer’s Games in Rio de Janeiro after it was added to the programme at the International Olympic Committee Session in Copenhagen in 2009.