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LAS VEGAS - FEBRUARY 05: (L-R) Anderson Silva and Vitor Belfort face off prior to their middleweight championship bout at UFC 126 at the Mandalay Bay Events Center on February 5, 2011 in Las Vegas, Nevada. (Photo by Jed Jacobsohn/Zuffa LLC/Zuffa LLC via Getty Images)

LAS VEGAS - FEBRUARY 05:  (L-R) Anderson Silva and Vitor Belfort face off prior to their middleweight championship bout at UFC 126 at the Mandalay Bay Events Center on February 5, 2011 in Las Vegas, Nevada.  (Photo by Jed Jacobsohn/Zuffa LLC/Zuffa LLC via Getty Images)

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LAS VEGAS, NV - FEBRUARY 05: (R-L) Anderson Silva lands a kick to the jaw of Vitor Belfort that knocked out the Brazilian challenger at UFC 126 at the Mandalay Bay Resort and Casino on February 5, 2011 in Las Vegas, Nevada. (Photo by James Law/Zuffa LLC/Zuffa LLC via Getty Images)

LAS VEGAS, NV - FEBRUARY 05: (R-L) Anderson Silva lands a kick to the jaw of Vitor Belfort that knocked out the Brazilian challenger at UFC 126 at the Mandalay Bay Resort and Casino on February 5, 2011 in Las Vegas, Nevada. (Photo by James Law/Zuffa LLC/Zuffa LLC via Getty Images)

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LAS VEGAS - FEBRUARY 02: (L-R) Middleweight Champion Anderson Silva faces off with opponent Vitor Belfort at the UFC 126 pre-fight press conference at the Mandalay Bay Resort and Casino on February 2, 2011 in Las Vegas, Nevada. (Photo by Josh Hedges/Zuffa LLC/Zuffa LLC via Getty Images)

LAS VEGAS - FEBRUARY 02:  (L-R) Middleweight Champion Anderson Silva faces off with opponent Vitor Belfort at the UFC 126 pre-fight press conference at the Mandalay Bay Resort and Casino on February 2, 2011 in Las Vegas, Nevada.  (Photo by Josh Hedges/Zuffa LLC/Zuffa LLC via Getty Images)