By Harry Davies Arman Tsarukyan punched a FAN whilst walking to the cage for his UFC 300 win against Charles Oliveira. Tsarukyan was looking to put himself in pole position for a lightweight title shot against Islam Makhachev when he took on former world champion Oliveira at the mega-event in Las Vegas on Saturday night. The Armenian fighter got into a scuffle before his actual fight as he was caught on camera punching a fan during his octagon walk. It’s unclear what caused Tsarukyan to strike the fan, but he didn’t let the moment faze him and went on to beat Oliveira by split decision. Olivei…