JDS says “Cain Velasquez is going to sleep!”

Outside of the cage, former UFC heavyweight champion Junior dos
Santos is one of the most affable people you could every hope to
encounter. All smiles and giggles, the 29-year-old for Salvador,
Bahia, Brazil is the embodiment of what you would like all
professional athletes to be when they’re interacting with
fans and media.

But when the cage door closes, the smile turns into a scowl, the
giggles replaced with an icy stare, and instead of offering a hug
or a handshake, “Cigano” strides to the center of the
cage and throws down the gauntlet.

Saturday night at UFC 166, the nicest knockout
artist in the UFC will look to once again claim championship gold
as he squares off with Cain Velasquez for the third time in two
years. The two have traded victories – and the UFC
heavyweight title – in their first two encounters, and this
weekend’s third fight promises to be every bit as griping and
exciting.

Speaking with UFC on FOX correspondent Ariel Helwani following
Friday’s weigh-ins, the 16-2 challenger gave his prediction
on how Saturday’s championship main event will play out.

Check out the clip and be sure to stay tuned to FoxSports.com
for complete coverage of UFC 166.