LONDON, ENGLAND - FEBRUARY 27:  After knocking out Silva's gumshield Michael Bisping of Great Britain (L) stops fighting Anderson Silva of Brazil but Silva fights on without his gumshield and knocks Bisping to the ground with his knee during the Middleweight Bout of the UFC Fight Night  at The O2 Arena on February 27, 2016 in London, England.  (Photo by Christopher Lee/Getty Images)