Ghana coach Mas-Ud Dramani admitted his side needed extra energy to dispatch Japan at the 2012 FIFA U17 Women’s World Cup finals.
The Black Maidens needed a 53rd minute goal from Sherifatu Sumaila to eliminate the Asian giants.
Prior to Friday’s encounter in Baku, had scored 17 goals and not conceded a goal from three matches.
“This game was very tactical. We scouted our opponent and the opponent scouted us,” Dramani said.
“We tried to respect their strengths and we played to our own.
”We also spotted their weaknesses and our physical condition was the hallmark of our win.”
Ghana have become the first African country to reach the medal zone of the competition which was first held in 2008.
They will face France on Tuesday in the semi-final.