Former UFC featherweight champion Ilia Topuria and former lightweight champion Charles Oliviera will battle for the vacant lightweight title in the main event of UFC 317 Saturday. There were a lot of moving parts to set up this match,

Ilia Topuria's emergence as one of the top pound-for-pound fighters in the world has propelled him to the biggest stage of his career as he takes on former champion and future Hall of Famer Charles Oliveira for the vacant lightweight title on Saturday night at UFC 317.