Olympic Games
The Olympic Games programme consists of 35 sports, 30 disciplines and 408 events. For example, wrestling is a Summer Olympic sport, comprising two disciplines: Greco-Roman and Freestyle. It is further broken down into fourteen events for men and four events for women, each representing a different weight class. The Summer Olympics programme includes 26 sports, while the Winter Olympics programme features 15 sports. Athletics, swimming, fencing, and artistic gymnastics are the only summer sports that have never been absent from the Olympic programme. Cross-country skiing, figure skating, ice hockey, Nordic combined, ski jumping, and speed skating have been featured at every Winter Olympics programme since its inception in 1924. Current Olympic sports, like badminton, basketball, and volleyball, first appeared on the programme as demonstration sports, and were later promoted to full Olympic sports. Some sports that were featured in earlier Games were later dropped from the programme.
United World Wrestling
Because of growing costs, the International Olympic Committee (IOC) has been under pressure to reduce the number of events and the number of athletes in each summer game. The IOC has adopted a system where "core sports" would continue indefinitely in future Olympics, but "non-core" sports would be selected for inclusion on an Olympic game-by-game basis. Wrestling was one of the 26 core sports. However, following the 2012 London Olympics, the IOC's Executive Committee conducted a study of the 26 core sports in terms of their success at the London Olympics as well as worldwide grassroots support. The study sought to trim one core sport so that starting with the 2020 Olympics, only 25 core sports would continue. On 12 February 2013, the IOC Executive Board voted to recommend that wrestling be dropped as a core sport.