A tennis union co-founded by Novak Djokovic on Tuesday announced a series of legal actions aimed at the sport's governing bodies, alleging "anti-competitive restraints and abusive practices"."The ATP, WTA, ITF, and ITIA operate as a cartel by implementing a number of draconian, interlocking anti-competitive restraints and abusive practices."
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https://sports.yahoo.com/article/djokovic-player-union-launches-legal-161101332.html