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CNN Sport quizzes Becker on the World Cup

The six-time grand slam tennis winner is a huge football fan

He was formerly on the board of Bayern Munich

Also supports Chelsea

CNN  — 

Boris Becker is best known for winning three Wimbledon titles and six grand slam tennis tournaments.

But the German is also a huge football fan. Indeed Becker – who turned 50 last week – once served on the board of Bayern Munich and is also a supporter of Chelsea.

He has analyzed football matches on television and was even a pitch-side reporter in the 2006 World Cup final between Italy and France.

So he was game to take CNN’s World Cup quiz.

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There were seven questions – some were very tough …