Wrestling at the Summer Olympics
Wrestling had been contested at the Summer Olympic Games since the sport was introduced in the ancient Olympic Games in 708 BC. When the modern Olympic Games resumed in Athens in 1896, wrestling (in the form of Greco-Roman wrestling) became a focus of the Games, with the exception of the 1900 Summer Olympics when wrestling did not appear on the program. Freestyle wrestling and weight classes both made their first appearance in 1904. The women's competition was introduced in 2004.
Wrestling
Freestyle wrestling is an international discipline and an Olympic sport, for both men and women. This style allows the use of the wrestler's or his opponent's legs in offense and defense. Freestyle wrestling has its origins in catch-as-catch-can wrestling and the prime victory condition in this style involves the wrestler winning by throwing and pinning his opponent on the mat. American high school and college wrestling is conducted under different rules and is termed scholastic and collegiate wrestling. 
Pankration, from the Greek words "pan" and "kratos" meaning "the one who controls everything", is a world heritage martial art with the distinction of being the only martial sport in the ancient Olympic Games from 648 BC to 393 AD. Modern amateur pankration is a form of mixed martial arts (MMA) that incorporates techniques from multiple systems. Matches are fought with both grappling holds and by striking techniques.