UFC 239, one of the most anticipated events of the year, takes place Saturday night with two title fights at the top of the card, and MMAjunkie Radio hosts “Gorgeous” George and “Goze” will have live streaming commentary via SportsCastr  that  kicks off for the main card at 10 p.m. ET. In the main event, hard-hitting Thiago Santos will challenge champion Jon Jones for the UFC light heavyweight title. And in the co-main event, UFC champ-champ Amanda Nunes puts her women’s bantamweight title on the line against former champion Holly Holm . The night will also feature a heated grudge match with welterweight title implications as Jorge Masvidal takes on Ben Askren .