Former featherweight champion and the second-best pound-for-pound fighter in the world, Ilia Topuria, became the 10th person to win two UFC belts when he knocked out Charles Oliveira in the first round to claim the lightweight title in their UFC 317 main event Saturday. His bitter rival, Paddy Pimblett, entered the Octagon from the audience after Topuria got his hand raised. They traded one-liners before Topuria shoved Pimblett and the two were separated. Is the stage already set for Topuria's first lightweight defense?