History of wrestling
When the First Modern Olympic Games held in Athens in 1896, Greco-Roman wrestling was introduced as an Olympic discipline. After not being featured in the 1900 Olympics, sports wrestling was seen again in 1904 in St. Louis; this time in freestyle competition. Since then, Greco-Roman and freestyle wrestling have both been featured (with women's freestyle added in the Summer Olympics of 2004).
Freestyle wrestling
In the spring of 2013, the International Olympic Committee (IOC) voted wrestling out of the core sports for the summer Olympics beginning in 2020 As a result of this news the wrestling community started a massive campaign in order to reinstate the sport. A largely online group called 2020 vision lead the movement. They had several campaigns as well as Facebook and Twitter pages that spread awareness and gathered support for the cause of wrestling's return to the Olympics. They had a mission of gaining 2,000,020 signatures (online and offline) in support of wrestling's return to the Olympic Games. In September 2013 the IOC voted to allow wrestling back into the Olympics for 2020 and 2024 as a probationary sport. In order to achieve this FILA, the international governing body of wrestling made several changes to the rules as well as changes to the weight classes. There are also discussions about uniform changes as well as changes to the competition mat.