Four-time Grand Slam champion Carlos Alcaraz says he was unaware there would be a class-action lawsuit filed in U.S. federal court against some of the groups that run tennis and made clear that he does not back the effort by the players' association co-founded by Novak Djokovic.

PTPA co-founder Novak Djokovic declined to be named in a suit accusing tennis' governing bodies and Grand Slams of ‘abusing their power.'

The player organisation set up by Novak Djokovic has launched legal action against tennis ' governing bodies. Formally founded by Djokovic and Canada's Vasek Pospisil in 2021, the Professional Tennis Players Association cites its mission as supporting and safeguarding professional tennis players.