Japan won the game 1-0 following a goal by CSKA Moscow midfielder Keisuke Honda.
“Today our players have really done a good job,” Okada told the-afc.com.
“In the next game we will be up against the Netherlands so we will have to go one step further.”
“This is the first win on foreign soil in the World Cup for our team but this is not an achievement at all,” added Okada. “What’s coming next is the point.”
