Saskatchewan-based Brock Lesnar announces retirement from pro wrestling CTV News Combat sports icon, 10-time WWE champ Brock Lesnar retires ESPN 'That's it for me': Brock Lesnar announces retirement from WWE Sportsnet.ca WWE legend Brock Lesnar says he's retired after losing to Oba Femi at SummerSlam Fox News Brock Lesnar retires from wrestling, ends WWE career USA Today