Las Vegas, Nevada (USA) ”“ Former UFC® heavyweight champion Brock Lesnar‘s mission to reclaim the title resumes on FRIDAY, Dec. 30 at the MGM Grand Garden Arena in Las Vegas when he meets one of the best strikers of all-time ”“ international superstar Alistair Overeem. The Ultimate Fighting Championship® announced today that the top heavyweight powerhouses will collide in the five-round main event of the organization‘s final card of 2011. What‘s more, the winner will be crowned the num…