A German nationalist MP has been given a formal warning by his party over a racist tweet on his account directed against the son of former tennis star Boris Becker.

Former tennis star Boris Becker said it was time to stand up against racism amid a controversy over a slur directed at his son from the Twitter account of a German nationalist politician.

Becker has been declared bankrupt - by a court official who watched him play on Centre Court.

Former tennis star Boris Becker has opened up about his famous sexual liaison at Nobu restaurant — saying he is happy if the brief encounter is one of the things he is best remembered for.

Novak Djokovic began the defence of his Australian Open crown in front of new coach Boris Becker with a 25th straight victory.