Novak Djokovic co-founded the Professional Tennis Players Association (PTPA) and filed a massive lawsuit against tennis governing bodies, namely the ATP, WTA, ITF, and ITIA in March. The association has now revealed that they have added the four Grand Slam tournaments in the suit as they seek greater player profits, especially in proportion to tournament earnings.

A total of 163 pages were filed in law courts in the United States, the United Kingdom, and the European Union (Brussels), and that has led to a long diplomatic battle. In fact, in recent months, there have been discussions about the extent to which players supported the legal actions and the PTPA course in the sport.

The lawsuit was signed by Nick Kyrgios , Reilly Opelka , Vasek Pospisil , Varvara Gracheva , and oth

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