During Canada's first group stage match at the 2007 FIFA Women's World Cup in China, the team faced Norway and were defeated 2–1. Sinclair scored a brace in the team's next group stage match against Ghana helping Canada win 4–0. She scored a goal in the team's final group stage match against Australia that resulted in a 2–2 draw. Canada finished third in their group and did not advance to the knockout stage of the tournament.