Freestyle wrestling

                     Freestyle 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. Outside the U.S., one can find professional wrestlers who compete by the rules of freestyle wrestling.
Sambo.
Sambo is a martial art that originated in the Soviet Union (specifically Russia) in the 20th century. It is an acronym for "self-defense without weapons" in Russian and had its origins in the Soviet armed forces. Its influences are varied, with techniques borrowed from sports ranging from the two international wrestling styles of Greece-Roman and freestyle to judo, jiujitsu, European styles of folk wrestling, and even fencing. The rules for sport sambo are similar to those in competitive judo, with a variety of leg locks and defense holds from the various national wrestling styles in the Soviet Union, while not allowing choke holds.