Submission Grappling/Wrestling
Submission is an extends Olympic wrestling styles by including chokes and joint locks to try an cause your opponent to submit due to discomfort or pain. An opponent signals their submission by tapping out (tapping the mat or their opponent).
It can be considered rather like Judo without the gee (clothing). It brings together many aspects of freestyle wrestling, Brazilian Jujitsu, sambo and judo. It also forms an important part of Mixed Martial Arts (MMA) and can be a useful component in self defence.
Submission Grappling was finally officially acknowledged by FILA (Fédération Internationale des Luttes Associées) in 2006 and is on course to become an official olympic sport.