Rafael dos Anjos ’ 40th birthday didn’t go as he expected. Not only did he lose to Geoff Neal on Saturday at  UFC 308 , he also suffered a devastating knee injury , the extent of which has not been revealed. Sunday, dos Anjos (32-17 MMA, 21-15 UFC ) released a statement on social media in which he apologized to his fans for the outcome and updated the public on his situation, though did not reveal a diagnosis. “Thank you all fight fans for the support, sorry I let you guys down,” dos Anjos said. “Definitely it was not how I want to celebrate my 40th birthday, it was a tough loss