Watch as Arman Tsarukyan headbutts Dan Hooker at ceremonial weigh-ins for UFC Fight Night in Qatar

Arman Tsarukyan nearly jeopardized his UFC Fight Night main event with Dan Hooker in Doha, Qatar. During Friday's ceremonial ...

UFC Qatar faceoffs: Arman Tsarukyan drills Dan Hooker with head butt

The lightweight main event for the UFC's debut in Qatar got a little heat added to it at the ceremonial weigh-ins in Doha.