Sign up for ESPN+ right here, and you can then stream the UFC live on your smart TV, computer, phone, tablet or streaming device via the ESPN app.
Bobby Green will step in for Rodrigo Vargas and square off against Alan Patrick Silva Alves at UFC Fight Night 177.
Promotion officials announced the change in the lightweight bout on Wednesday. Vargas withdrew from the contest for undisclosed reasons. UFC Fight Night 177 takes place at the UFC Apex in Las Vegas on Sept. 12 and is headlined by a light heavyweight scrap pitting Thiago Santos against Glover Teixeira.