Every Sunday, The MMA Corner will take a look back at the biggest news of the week.

On this week’s installment, we discuss the news that current UFC light heavyweight No. 1 contender Alexander Gustafsson has suffered a knee injury and is out of his UFC 178 title challenge against champion Jon Jones. Stepping in for Gustafsson will be undefeated former Olympic wrestler Daniel Cormier. Is Cormier a tougher fight for the champion? Can he be the man to dethrone Jones?

We also look at the recent announcement that former UFC light heavyweight title holder Vitor Belfort has been granted a conditional license from the Nevada State Athletic Commission and will challenge middleweight champion Chris Weidman at UFC 181. Given Belfort’s multiple drug failures in the past, is the promotion sending the wrong message by allowing him to challenge for the title? Does he have anything for the unbeaten champion?

Finally, we look at the news that former Strikeforce champion and UFC title challenger Nick Diaz has ended his retirement and signed a new deal with the UFC. Being that Diaz has been out for so long and hasn’t won a fight since 2011, what fight makes the most sense for his return to the cage?

Join us above as we look back at all the news from throughout the world of MMA. The live video stream will begin at 2 p.m. ET. Do you have a question or a topic you’d like the hosts to discuss? Send them a tweet @TheMMACorner or post in the question and answer section of the Google+ hangout.