Absolute Championship Berkut staged its biggest event ever today, with 25-fight ACB 54: Supersonic in Manchester, England. In the main event, KSW middleweight champion Mamed Khalidov took on UFC veteran and Venator FC middleweight champ Luke Barnatt , and it did not last long — 21 seconds to be exact. They came out, touched gloves, and after moments of feeling each other out, all it took was one big overhand right to signal the end. It came from Khalidov (33-4-2), who then swarmed Barnatt (12-4) with a flurry of punches as Barnatt’s attempt to cover up proved futile once referee Herb Dean stopped the fight. You can see the entire bout below. Incredible by Mamed Khalidov! Wasted no time to claim victory in the main event of #ACB54 ! https://t.co/NsdDUUkp6c — ACB fighting league (@acb_league) March 11, 2017 Related: Scary (and nifty) choke puts Bubba Jenkins to sleep, eyes roll in back of his head For more on the upcoming MMA schedule, check out the MMA Rumors section of the site