Suspended World No.1 Jannik Sinner has decided to play the Hamburg Open for the first time in his career, when his controversial three-month doping ban ends in May. And a group including Novak Djokovic and Nick Kyrgios is taking legal action against the governing bodies of tennis after accusing them of anti-competitive practices and a disregard

The Professional Tennis Players Association (PTPA) has taken legal action against the ATP, WTA, ITF and ITIA, accusing them of 'systemic abuse and corruption'

The ATP and WTA have been named in a huge legal case filed by the Professional Tennis Players Association (PTPA) - founded by Novak Djokovic.

Some top tennis players are suing the sport’s governing bodies for allegedly running a cartel that caps prize money, limits off-court earnings and restricts competition from rival tournaments.The Professional Tennis Players Association,