EUGENE HOSHIKO / ASSOCIATED PRESS Enlarge
SHANGHAI, China Natasha Kai headed in an extra time goal, giving the defending champion United States a spot in the Olympic women's soccer semifinal with a 2-1 victory over Canada.
Angela Hucles gave the Americans a 12th-minute lead with a goal from in close at Shanghai's Olympic Stadium on Friday.
But Christine Sinclair countered in the 30th for Canada with a powerful 22-meter shot.
The game was suspended for one hour and 40 minutes during the first half because of lightning.