Muay Thai in the context of "Stand-up fighting"

A combat sport, or fighting sport, is a contact sport that usually involves one-on-one combat. In many combat sports, a contestant wins by scoring more points than the opponent, submitting the opponent with a hold, disabling the opponent (knockout, KO), or attacking the opponent in a specific or designated technique. Combat sports share a long history with the martial arts.

Some combat sports (and their national origin) include boxing (Greek-British), Brazilian jiu-jitsu (Japanese-Brazilian), catch wrestling (British-American), jujutsu (Japanese), judo (Japanese), freestyle wrestling (British-American), Greco-Roman wrestling (French), karate (Chinese-Okinawan-Japanese), kickboxing (numerous origins, mainly Southeast Asian), Lethwei (Burmese), mixed martial arts (numerous origins), Muay Thai (Thai), sambo (Soviet/Russian), sanda (Chinese), savate (French), taekwondo (Korean), Vale Tudo (Brazilian), pankration (Ancient Greek), luta livre (Brazilian), and folk wrestling (various).

Clinch fighting or trapping is the part of stand-up fighting where the combatants are grappling in a clinch, typically using clinch holds. Clinching the opponent can be used to eliminate the opponent's effective usage of some kicks, punches, and melee weapons. The clinch can also be used as a medium to switch from stand-up fighting to ground fighting by using takedowns, throws or sweeps.

Clinch fighting is emphasized in both striking martial arts, such as Kun Khmer, Muay Thai, Lethwei, Boxing, and Sanda, as well as grappling martial arts, such as Wrestling, Judo, Sumo, Sambo and Brazilian Jiu-Jitsu.

A kick is a physical strike using the leg, in unison usually with an area of the knee or lower using the foot, heel, tibia (shin), ball of the foot, blade of the foot, toes or knee (the latter is also known as a knee strike). This type of attack is used frequently by hooved animals as well as humans in the context of stand-up fighting. Kicks play a significant role in many forms of martial arts, such as capoeira, kalaripayattu, karate, kickboxing, kung fu, wing chun, MMA, Muay Thai, pankration, pradal serey, savate, sikaran, silat, taekwondo, vovinam, and Yaw-Yan. Kicks are a universal act of aggression among humans.

Kicking is also prominent from its use in many sports, especially those called football. The best known of these sports is association football, also known as soccer.

A knockout (abbreviated to KO or K.O.) is a fight-ending, winning criterion in several full-contact combat sports, such as boxing, kickboxing, Muay Thai, mixed martial arts, karate, some forms of taekwondo and other sports involving striking, as well as fighting-based video games. A full knockout is considered any legal strike or combination thereof that renders an opponent unable to continue fighting.

The term is often associated with a sudden traumatic loss of consciousness caused by a physical blow. Single powerful blows to the head (particularly the jawline and temple) can produce a cerebral concussion or a carotid sinus reflex with syncope and cause a sudden, dramatic KO. Body blows, particularly the liver punch, can cause progressive, debilitating pain that can also result in a KO.

Boxing is a combat sport and martial art. Taking place in a boxing ring, it involves two opponents throwing punches at each other for a predetermined amount of time, it is usually done wearing protective equipment, such as protective gloves, hand wraps, and mouthguards.

Although the term 'boxing' commonly refers to the Western style, where only the fists are used, it has evolved differently in various regions and cultures across the world. Today the term, "boxing" is also used to refer to any kind of combat sport focused on striking, where two opponents fight each other using their fists, and could possibly involve kicks, elbow strikes, knee strikes, and headbutts, depending on the rules. These include bare-knuckle boxing, kickboxing, Muay Thai, Lethwei, savate, and sanda. Boxing techniques have been incorporated into many martial arts, military systems, as well as other combat sports.

Kickboxing is a full-contact hybrid martial art and boxing type based on punching and kicking. Kickboxing originated in the 1950s. The fight takes place in a boxing ring, normally with boxing gloves, mouth guards, shorts, and bare feet to favor the use of kicks. Kickboxing is practiced for self-defense, general fitness, or for competition. Some styles of kickboxing include: full contact karate, Muay Thai, Japanese kickboxing, Lethwei, Sanda, and Savate.

Although since the dawn of humanity people have faced each other in hand-to-hand combat, the first documentation on the use of kicking and punching in sports combat is from ancient Greece and ancient India. But nevertheless, the term kickboxing originated in Japan, in the 1960s, and developed in the late 1950s from karate mixed with boxing, having some influence, with competitions held since then. American kickboxing originated in the 1970s and was brought to prominence in September 1974, when the Professional Karate Association (PKA) held the first World Championships. Historically, kickboxing can be considered a hybrid martial art formed from the combination of elements of various traditional styles. This approach became increasingly popular since the 1970s, and since the 1990s, kickboxing has contributed to the emergence of mixed martial arts via further hybridization with ground fighting techniques from Brazilian jiu-jitsu, and folk wrestling.

Mixed martial arts (MMA) is a full-contact fighting sport based on striking and grappling, incorporating techniques from various combat sports from around the world.

In the early 20th century, various inter-stylistic contests took place throughout Japan and the countries of East Asia. At the same time, in Brazil there was a phenomenon called vale tudo, which became known for unrestricted fights between various styles such as judo, Brazilian jiu-jitsu, catch wrestling, luta livre, Muay Thai and capoeira. An early high-profile mixed bout was Kimura vs Gracie in 1951. In mid-20th-century Hong Kong, rooftop street fighting contests between different martial arts styles gave rise to Bruce Lee's hybrid martial arts style, Jeet Kune Do. Another precursor to modern MMA was the 1976 Ali vs. Inoki exhibition bout, fought between boxer Muhammad Ali and wrestler Antonio Inoki in Japan, where it later inspired the foundation of Shooto in 1985, Pancrase in 1993, and the Pride Fighting Championships in 1997.

Vale Tudo or vale-tudo (Portuguese pronunciation: [ˈvali ˈtudu]; English: Everything Goes/Everything Allowed), also known as No Holds Barred (NHB) in the United States, is an unarmed, full-contact fighting style or competition format characterized by having very few rules. It became popular in Brazil during the 20th century and would eventually evolve into modern mixed martial arts (MMA). For years, "Vale Tudo" was used as a synonym for MMA in Brazil, but the term fell into disuse due to the emergence of stricter rules and the influence of the media to have a more "civilized" name. It is now used to refer to an early, more rules-free stage of the modern sport.

Vale Tudo initially started as an informal ruleset for fighters from different martial arts to fight each other. The Gracie family was known to organize their famous "Gracie Challenge", in which they would fight other martial artists in Vale Tudo bouts to prove the efficiency and superiority of their own Gracie jiu-jitsu. Many fighters eventually started to train specifically for Vale Tudo events, mixing striking and grappling, eventually advertising "Vale Tudo" as its own standalone style. For example, Marco Ruas referred to his hybrid style of Luta Livre and Muay Thai striking simply as "Vale Tudo".