At UFC 229 weigh-ins, Derrick Lewis ramps up the intensity when he knocks off Alexander Volkov's hat on Friday in Las Vegas. Subscribe: http://goo.gl/dYpsgH Check out our full video catalog: http://goo.gl/u8VvLi Visit our playlists: http://goo.gl/eFhsvM Like MMAF on Facebook: http://goo.gl/uhdg7Z Follow on Twitter: http://goo.gl/nOATUI Read More: http://www.mmafighting.com MMA Fighting is your home for exclusive interviews, live shows, and more for one of the world's fastest-growing sports. Get latest news and more here: http://www.mmafighting.com