Gilbert Burns has tested positive for Covid-19 and is out of next weekend’s UFC 251 main event against welterweight champion Kamaru Usman. It was reported by MMA Junkie that neither fighter boarded a charter flight to Abu Dhabi on Friday night. MMA Junkie later reported the Brazilian and two of his cornermen – his brother and fellow UFC star Herbert Burns, and coach Greg Jones – had returned positive tests. They had travelled from Florida to Las Vegas, which the UFC is using as a hub to test fighters before four events on “Fight Island” in the UAE this month. Burns (18-3) and Usman (16-1) both live and train in Florida, which reported more than 10,000 new coronavirus cases on Thursday – the biggest one-day increase for the southeastern state since the pandemic started. ONE Championship double title-holder Aung La N Sang – Burns’ and Usman’s teammate at Sanford MMA in Fort Lauderdale – had revealed on Thursday he recently tested positive for coronavirus . Max Holloway’s rematch with UFC lightweight champion Alex Volkanovski will now headline July 11’s card on Yas Island in the UAE. UFC: Ferguson wants Gaethje rematch as suspension clears MMA Junkie reported Usman vs Burns is expected to be rescheduled at a later date. “Durinho” earned the No 1 contender spot and a shot at “The Nigerian Nightmare” by dominating former champion Tyron Woodley in a unanimous decision at UFC Fight Night in Las Vegas on May 31.