According to a report on Yahoo! Sports, Brock Lesnar is out of his scheduled Heavyweight title fight at UFC 106 in November against Shane Carwin due to a bad illness.
UFC president Dana White stated, “He's never been this sick in his life. He said it's been going on for a long time and he just hasn't been able to shake it.”
White did shoot down the rumors that Lesnar had contracted the swine flu virus, but didn't go into specific detail on what the illness is that is keeping Lesnar off the UFC 106 card.