The Olympic women's competition is hotting up with gold medal favourite United States, host Great Britain and hopeful Brazil qualifying for the quarter-final stage.
US beat Colombia 3-0, Great Britain cruised past Cameroon 3-0 while Brazil needed a late goal to win 1-0 against New Zealand.
Midfielder Megan Rapinoe opened the scoring for US in the 33rd minute after receiving a pass from forward Alex Morgan.
US dominated possession in the first half and could have added to the score only to be denied by a resolute Colombia defence.
In the second half US ramped up the pressure and scored twice. Abby Wambach worked her way into the box before netting, the goal making her the all-time leading scorer in the Olympics for US.
Carli Lloyd later completed the scoring in the 77th minute to ensure US went to six points in Group G from two matches.
Great Britain advanced to the next round by beating Cameroon with goals from Casey Stoney, Jill Scott and Stepanie Houghton. Great Britain sits second behind Brazil in Group E on goal difference with six points.
Brazil looked as if it would have to settle for a scoreless draw against New Zealand in Cardiff, but a late winner secured a second straight victory for the South American side in Group E.
Brazil, chasing its first major trophy in women's football, now has six points from two matches.
World champion Japan was held to a 0-0 draw by Sweden, with Sweden now topping Group F ahead of Japan on goal difference with four points.
Japan had numerous chances, but Sweden goalkeeper Hedvig Lindahl kept it scoreless with several brilliant saves.
In Coventry, Canada beat South Africa 3-0 with two goals from Christine Sinclair.
Melissa Tancredi completed the scoring to lift Canada to third in Group F with three points, one behind Japan and Sweden. The two best third-place teams advance to the quarter-finals along with the top two teams in each group.
France beat Korea DPR 5-0 in the late match at Hampden Park, pouring in four goals in the last 20 minutes. France leapt to second place in Group G, ahead of Korea DPR on goal difference with three points each.
London 2012 has given women's football in the UK an 'unprecedented platform' on which to create a lasting legacy, according to the Football Association's head of national game Kelly Simmons.