Following a hour and forty minute delay due to thunderstorms, the encounter resumed at the 18th minute with the USA already leading 1:0 on a goal by Angela Hucles from the 12th minute.
Christine Sinclair tied the match for the Maple Leafs with goal in the 30th minute. After a scoreless second half, the encounter went to extra time where Natasha Kai got the game-winner for the Stars & Stripes in the 101st minute.
The USA will face Japan in the semifinals scheduled for Monday, 18 August at the Worker's Stadium in Beijing. Meanwhile, the other semifinal in Beijing has Brazil against Germany.
The bronze medal and gold medal matches will take place at the Worker's Stadium on 21 August.
OLYMPIC GAMES BEIJING 2008
Women's Football Tournament
Quarterfinals
15.08: Shanghai Stadium (A: 26129)
USA - CANADA 2:1 (1:1) aet
Angela HUCLES 12'; Natasha KAI 101' - Christine SINCLAIR 30'
USA: Hope Solo - Heather Mitts, Christie Ramponse-C, Lindsay Tarpley (82: Tobin Heath), Shannon Boxx, Amy Rodriguez (109: Lauren Cheney), Heather O'Reilly (91: Natasha Kai), Carli Lloyd, Kate Markgraf, Angel Hucles, Lori Chalupny. Booked: Cheney 112'
TD: Pia SUNDHAGE
CAN: Erin McLeod (19: Karina LeBlanc) - Emily Zurrer, Clare Rustad, Sophie Schmidt, Rhian Wilkinson, Diana Matherson, Candace Chapman, Martina Franko, Christine Sinclair-C, Melissa Tancredi (46: Brittany Timkon) (92: Jonelle Filigno), Kara Lang. Booked: Franko 70', Lang 84'
TD: Even PELLERUD
R: Jenny PALMQVIST (SWE)
Semifinals
18.08: Worker's Stadium; Beijing (21:00)
JAPAN - USA
Photo by Tony Quinn
