Submitting me is almost impossible -- Shields

Jake Shields might be difficult to submit, but punching him isn't exactly impossible. AP Photo/Jae C. Hong

Jake Shields has warned Georges St. Pierre not even to waste his time attempting a submission when the pair collide in the UFC 129 main event on Saturday.

Shields has not lost since 2004, and he has never been submitted in a career spanning over 10 years. The Cesar Gracie Jiu-Jitsu fighter is widely regarded as the best grappler in the 170-pound division, having outworked Dan Henderson in a recent Strikeforce outing. More »