Gold-medal favourites the United States, world champions Japan and Brazil all won their matches on the first day of women's Olympic football on Wednesday, but all the talk was about an embarrassing mistake by organisers who displayed the South Korean flag instead of the North Korean one before the game in Glasgow.
The flag flap happened as North Korea prepared to play Colombia at Hampden Park. A North Korean player was introduced on the jumbo screen along with a picture of the South Korean flag, prompting the team to refuse to take the field and delaying the game start for more than an hour.
When they did come out, North Korea won 2-0 courtesy of a brace by Kim Song Hui who scored a goal in each half.
Earlier on Wednesday Brazil striker Cristiane became the most successful goalscorer in Olympic women's football history as the South Americans opened their 2012 campaign with a 5-0 thumping of Cameroon.
Cristiane grabbed the fourth goal late in the second half at the Millennium Stadium in Cardiff.
It was her 11th Olympic goal, meaning she is now the all-time leading scorer in women's Olympic football, overtaking Birgit Prinz of Germany.
Other goals from Francielle and Renata Costa and two from star striker Marta sealed the win for the Beijing silver medallist Samba Queens.
Defending Olympic champions the US continued the goalfest with a 4-2 win over France, while world Cup winners Japan got past Canada 2-1.