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Editor's note: The article has been updated at 3:00 p.m. ET on Oct. 30 to reflect that Greg Hardy officially made weight.
A few Ultimate Fighting Championship fighters may have cracked into their Halloween candy a little early this weekend.
After another eventful stint on Yas Island, Abu Dhabi, the UFC returns to Las Vegas. Headlining the first-ever UFC Halloween event is former middleweight king Anderson Silva taking on Uriah Hall.