Boris Becker unaware he wore scarf linked to Chelsea hooligan firm

Six-time Grand Slam tennis champion Boris Becker has claimed that he was completely unaware that he wore a Chelsea scarf linked to a hooligan group.

The German, who works as Novak Djokovic's coach, was pictured at Stamford Bridge on Wednesday wearing a 'Chelsea headhunters' scarf, which displayed the firm's skulls emblem.

Becker watched the Blues' Champions League last-16 exit to Paris Saint-Germain from an executive box at the West London ground.

"I wasn't aware of that," Becker told Bild. "I own at least 10 scarfs and just grabbed one I bought at a stall outside the stadium a few years ago. I am the last to support hooligans."

The hooligan firm was established back in the 1960s.