At UFC 178 media day, UFC light heavyweight champion Jon Jones and Daniel Cormier exchanged shots during the promotion of the event Monday afternoon.

The pre-fight festivities between UFC light heavyweight champion Jon Jones and Daniel Cormier went to a new level on Monday morning when a staredown between the pair ended up resulting in a brawl that destroyed the stage and sent security officers scrambling to contain both fighters.

Jones and Cormier, with UFC representative Dave Sholler in the middle, met in the center of a small stage set up for media interviews. They immediately went face to face, and Cormier shoved Jones backwards. Jones surged forward and threw a punch over Sholler, attempting to land on Cormier. He continued lunging after Cormier, and both fighters fell through a backdrop and onto the floor of the MGM Grand lobby.

UFC security forces attempted to pull the men apart, but Jones continued throwing punches at Cormier. The challenger, arms held behind his back by security, flailed with his legs and tried to kick Jones in the head.

Security finally pulled both fighters apart. Jones went back on the stage, raised his face to the ceiling and let out a ferocious howl..