The matchup between the U.S. and Canada was the 52nd in the history of the series. The U.S. held a 43–3–5 advantage, and they had not lost to Canada since 2001. en route to earning the gold medal. At the final of the
2012 CONCACAF Women's Olympic Qualifying Tournament, the U.S. and Canada met, having already clinched places in the Olympics. The U.S. won by a 4–0 margin. Canada opened the group stage of the tournament on 25 July against Japan, who was coming off victory in the
2011 FIFA Women's World Cup. The world champions opened the scoring in the 33rd minute on a goal from inside the penalty area by
Nahomi Kawasumi. Just before halftime,
Aya Miyama doubled Japan's lead with a headed goal in the 44th minute, and came close to another goal in the 51st minute, when Canada's
Lauren Sesselmann was forced into a goal-line clearance. After a slow start to the game, Canada pulled a goal back in the 56th minute as
Melissa Tancredi scored, but the match ended 2–1 in favor of Japan. Canada's next game was three days later against
South Africa. Tangredi scored a goal in the seventh minute, and in the second half Sinclair netted twice, as the Canadians won 3–0. On 31 July,
Sweden opposed Canada in the final game of the teams' group stage play, and scored twice early in the game to take the lead. Tancredi cut Canada's deficit in half near the end of the first half, and added a second in the second half as Canada secured a 2–2 draw. The team finished third in the group and advanced to the quarterfinals, having finished with the best record of any team outside the top two in their group. The U.S. entered the Olympic tournament as one of the favorites. They opened the group stage on 25 July at
Hampden Park against
France, who they had defeated in the semifinals of the previous year's World Cup. France, who had won 17 straight games entering the contest, scored twice in the opening 15 minutes, on goals by
Gaëtane Thiney and
Marie-Laure Delie. Later in the first half, the U.S. responded with goals by
Abby Wambach and
Alex Morgan, which left the game tied 2–2 at halftime. The U.S. took the lead in the 56th minute on a long-range shot by
Carli Lloyd, and 10 minutes later Morgan added a second goal to give the U.S. a 4–2 margin, which proved to be the final score. Old Trafford played host to the last U.S. group stage game, against
North Korea on 31 July. A 25-minute goal by Wambach was enough to give the U.S. a 1–0 victory and first place in the group. In the quarterfinal stage, the Americans were opposed by
New Zealand. In the 27th minute, a right-footed cross from Morgan found Wambach, who slotted the ball past New Zealand goalkeeper
Jenny Bindon to give the U.S. the first goal of the game. The score remained the same until the 87th minute, when U.S. substitute
Sydney Leroux finished a counterattack by hitting a right-footed shot into the corner of the net, a goal that clinched a 2–0 U.S. win and a spot in the semifinals against Canada. ==Match summary==