News An all-star cast – including defending men’s and women’s singles champions Andy Murray and Serena Williams – has been announced for the tennis tournaments at the Rio 2016 Olympic Games this August The provisional list revealed on Thursday (30 June) by the International Tennis Federation (ITF) features the world's top five male and female players, including star names such are Novak Djokovic, Roger Federer, Rafael Nadal, Garbine Muguruza, Angelique Kerber and Victoria Azarenka Sixty-four players of each gender will contest the singles tournaments Players were selected according to the world rankings on 6 June, plus two invited competitors in both events  There is a limit of four singles players per gender per country   Also announced were the entries for the men’s and women’s doubles tournaments, with the American duos of brothers Bob and Mike Bryan and sisters Venus and Serena Williams set to defend their Olympic titles Thirty-two teams will contest both the men’s and women’s doubles, with entries based on the world rankings  Nations were able to nominate up to two doubles teams per event Entries for the mixed doubles will be confirmed in Rio during the Olympic tennis competition, from those players already participating in singles or doubles, with a maximum of two teams per country Brotherly love: Mike and Bob Bryan will be in Rio (Photo: Getty Images/Matthew Lewis) ITF president David Haggerty said: “We are delighted to welcome another outstanding field to the Olympic tennis event Since the return of tennis to the Olympics in 1988, the event has continued to grow at each Games, with the current generation of players embracing this unique opportunity in our sport We expect that the competition in each discipline will be fierce, and look forward to some memorable matches ” The draw will be held  at the Olympic Tennis Centre on 4 August at 11am local time, the day before the opening ceremony The Rio 2016 tennis tournaments will take place at the Olympic Tennis Centre on 6-14 August Check out the men's and women's rankings Rio2016 com is not an absolute authority on qualification for the Olympic and Paralympic Games, which is an ongoing process Final places will only be confirmed in July 2016 (for the Olympic Games) and August 2016 (for the Paralympic Games) The qualification systems are defined by each sport’s respective International Federation and the International Olympic Committee or International Paralympic Committee, and are subject to change When an athlete or team wins a quota place for their nation, the final decision on whether this ‘slot’ is used and which athletes are sent is taken by the respective National Olympic Committee or National Paralympic Committee (NOC or NPC) Even when athletes win a ‘nominal’ place for themselves, NOCs/NPCs may have to decide who to send if the number of qualified athletes from one country exceeds the quota