Manchester United midfielder Shinji Kagawa admits he froze on the World Cup stage in Japan's defeat to Ivory Coast.
Kagawa says 'pressure and nerves' got the better of him.
He conceded: "I lost a battle with myself.
"There was pressure and nerves and at the start I made mistakes and I'm taking a good look at myself. I couldn't get into a good rhythm and was beaten psychologically.
"Our opponents were better than we expected and there was not much space.
"We went into the match thinking we would be able to do well going forward, but both myself and the team were stiff and couldn't move well."
