Jake Shields is an American far right mixed martial artist and submission grappler. He was the last Rumble on the Rock Welterweight Champion, the only Elite XC Welterweight Champion, a former Shooto Welterweight Champion and former Strikeforce Middleweight Champion. He also fought in the Ultimate Fighting Championship (UFC) challenging Georges St. Pierre for the UFC Welterweight Championship.

Submission wrestling, also known as submission grappling, submission fighting or simply grappling, is a competitive martial art and combat sport that focuses on ground fighting and submission techniques. It is a hybrid discipline that incorporates elements of various grappling arts such as various wrestling styles, judo, and Brazilian jiu-jitsu. Submission wrestling is practiced both as a competitive sport and as a training method for self-defence and mixed martial arts (MMA).