Marrone is currently managed by Jack Luce and trained by Eddie Chambers, Sr.

Eddie Chambers (born in Wolverhampton in 1960) is a British artist, writer, curator and academic.

His most recent fight was against Eddie Chambers on July 4, 2009 which he lost by majority decision.

He next fought on the date of June 16, 2012 against Eddie Chambers in Prudential Center and won by unanimous decision.

Eddie Chambers appeared on the video game, Fight Night Round 4 as a heavyweight.

March 20 - Wladimir Klitschko knocks out Eddie Chambers with a fierce left to the temple with five seconds left in the fight.

Peter was defeated by Eddie Chambers by majority decision on March 27, 2009.

Less than a week later, Eddie Chambers won a split decision victory over former title challenger Calvin Brock.

Following his loss to fellow American Eddie Chambers, Brock was forced to retire from the sport of boxing, after receiving retinal damage in his right eye.

In November he was edged out by Eddie Chambers in an IBF semifinal.