Calling the groups in charge ofprofessional tennisa cartel, the players association co-founded byNovak Djokovicfiled an antitrust lawsuit against the womens and mens tours, the International Tennis Federation and the sports integrity agency on Tuesday in federal court in New York.The suit by theProfessional Tennis Players Associationsays the organizations that run the sport hold complete control over the players pay and working conditions and their setup constitutes textbook violations of state and federal law that immunize professional tennis from ordinary market forces and deny professional tennis players and other industry participants their right to fair competition.The lawsuit seeks a jury trial and wants players to gain access to more earnings, arguing that the governing bodies that oversee the four Grand Slam tournaments Wimbledon, the U.S. Open, the French Open and the Australian Open and other professional events cap the prize money tournaments award and limit players ability to earn money off the court.The WTA Tour and ATP Tour issued separate statements Tuesday saying they would vigorously defend themselves.The WTA said it has committed to a $400 million increase in player compensation in recent years and labeled the PTPA action a baseless legal case that is regrettable and misguided. The ATP touted a major increase in player compensation that created a jump of $70 million in the past five years, and called the PTPAs case entirely without merit.The PTPA has consistently chosen division and distraction through misinformation over progress, the ATPs statement said. Five years on from its inception in 2020, the PTPA has struggled to establish a meaningful role in tennis, making its decision to pursue legal action at this juncture unsurprising.The ITF and the International Tennis Integrity Agency which investigates and adjudicates doping and corruption cases declined to comment.The PTPA wasfounded by 24-time Grand Slam champion Djokovic and Vasek Pospisilin August 2020, aiming to offer representation for players who are independent contractors in a largely individual sport. One of the goals made clear along the way was to become a sort of full-fledged union that negotiates collective bargaining agreements like those that exist in team sports.For the past few years, the PTPA, an organization Ive worked on tirelessly since its inception, has made countless efforts to collaborate with the tours in hopes of achieving positive change for players. Despite these efforts and attempts to engage in constructive dialogue, we were met with resistance and a lack of meaningful action. It is because of this ongoing disregard for players that we were left with no alternative but to take action of our own, Pospisil posted on social media. For too long, players have been forced to accept a broken system that ignores our well-being, undervalues our contributions, and leaves us without real representation.Djokovic is not one of the players listed as a plaintiff.His support for this is already explicit. Its redundant since PTPA (is) named as plaintiff, and he is on (the executive committee), PTPA spokesman David Cooper wrote in an email. He wanted to allow others to step up since this is not just Novaks (organization).The PTPA said it met with more than 250 players women and men, and a majority of the top 20 in the WTA and ATP rankings before going to court.Tennis is broken, PTPA executive director Ahmad Nassar said in a news release. Behind the glamorous veneer that the defendants promote, players are trapped in an unfair system that exploits their talent, suppresses their earnings, and jeopardizes their health and safety. We have exhausted all options for reform through dialogue, and the governing bodies have left us no choice but to seek accountability through the courts. Fixing these systemic failures isnt about disrupting tennis its about saving it for the generations of players and fans to come.Howard Fendrich, AP tennis writer