If Donald decide to use his underrated boxing skills to outbox Briggs, than he wins. Otherwise, i believe Shannon might prevail and wins the showdown by controversial MD or SD in a very bad fight that the press would say Larry should have won.
Good fight I'm going with Donald ... Hell of a chin on that man Still have no clue how he took those flush sucker punches on the jaw from Bowe without even being staggered a little ... Bowe is 6'5" 240+lbs
Donald via superior skills. Shannon would be dangerous til the end, but Donald was never reckless and had good stamina.