The result was also the first draw of the 2019 FIFA Women's World Cup.
"We don't set out to be defensive against any team", coach Takakura said. "We have to bring something to the table to face them".
That there were tears at full-time and the Argentines entered the press mixed zone soon after singing "Vamos Argentina" was telling of the importance this feat held to the underdogs, who last appeared at a World Cup in 2007.
"I congratulated my players. The fact they understand your game plan and are so disciplined on the pitch is very satisfying to see", Borrello said. "We couldn't play any other way against this team".
"We had to keep ourselves back and focused, and be very, very organised with that sort of attitude to come out with a counter-attack".
"It's the World Cup".
After an opening half with few opportunities, Japan missed a chance to take the lead in the 50th minute.
The tournament underdogs overcame huge adversity to arrive at the finals, including a two-year period in which they played no games.
A dour first-half saw both sides make poor judgements and we had to wait until the 26th minute for a first real attempt on goal. We know we still have two national teams ahead of us to face. Speaking about Japan, this team has already won the FIFA Women's World Cup 2011. The action will take place at Parc des Prince, Paris.
Argentina center forward Sole Jaimes made her presence felt with heavy challenges in the first half, one drawing a gasp from the crowd.
Japan had a good deal of possession around the Argentina box but could not find a way to test Correa in the first half. Both matches are on Friday.
Canada came into the tournament on a nine-match unbeaten run and cruised to a 1-0 victory against Cameroon thanks to a Kadeisha Buchanan header on the stroke of half-time. But all eyes were on her teammate Christine Sinclair, who is four goals away from becoming the sport's all-time worldwide top scorer.
Canada's veteran striker Christine Sinclair, who needs four more goals to overtake retired American Abby Wambach as the top scorer in women's global football, had a particularly hard night in front of goal. She had scored in the opening game of each of her previous four World Cup appearances.
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