The 43 year-old was far too powerful for the former cruiserweight world title challenger and had Marrone, 29, in trouble from the very first round.
In the second, Briggs stepped up his work and delivered a beautiful head, body combination to end the fight there and then with Marrone sprawled on the canvas.
The win kept up Briggs’ unbeaten streak as the fighter pines for a shot at current top division king Wladimir Klitschko.
