Anna Kournikova admits she couldn't concentrate while playing

London, January 09 (ANI): Former tennis star Anna Kournikova has admitted she found it hard to concentrate on her game.

She mentioned that it eventually became a major problem while playing.

"This is my big weakness. I often started a match well but then my thoughts would suddenly wander somewhere else," the Daily Star quoted her as telling Germany's Spiegel magazine.

She added: "This also happens to me when I do other things. I am impatient and lacked calmness on the court." (ANI)