Video: UFC 308 ‘Countdown to Whittaker vs. Chimaev’ Sherdog.com Staff Oct 21, 2024 Comments Former Ultimate Fighting Championship middleweight kingpin Robert Whittaker will collide with Khamzat Chimaev at UFC 308. This segment of "Countdown" previews the matchup from behind the scenes. UFC 308: Topuria vs. Holloway Saturday at 2 PM ET on ESPN+. Order Now!