Melissa (Missy) "The Fury" Fiorentino from Cranston, Rhode Island made a successful transition from amateur kick-boxer to professional boxer. Her rapid firing, power-punching style had led to her being described as "the Rocky Marciano of women’s boxing".

Missy, a graduate of Roger Williams College. As a Rhode Island Deputy Marshall, her responsibilities includes transporting prisoners from to the courthouse in Providence. "Some of the prisoners have seen me fight on television," she says, "Once in a while one will say to another ... better not mess with her or she'll knock you out."

Missy began her boxing career as an amateur. She won the 139-ob division of the 2000 USA Boxing Everlast National Championships; On May 5-6, 2000 in the 63.5-kg semifinal of the Feenix Box Cup in Turku, Finland, Missy lost to Canada's Tanya Robertson by RSC-3; In June of 2000 at the Riviera Club in Cranston, Rhode Island, she won the vacant USKBA Amateur Female Full Contact Lightweight title with a five-round unanimous decision; In the 132-lb Open Division at the 2000 US National/international Golden Gloves in Augusta, Georgia, Missy defeated Trisha Hill of Kennesaw and then lost in the semi-finals; In November 2000 in a Russia-USA Dual Meet at the Good Time Emporium in Somerville, Massachusetts, Missy defeated Irina Sinetskaya of Russia by 10-7 in a 139-lb contest; and she continued to box successfully in the amateurs until turning pro, in November of 2001.

In one of her prominent bouts, in November of 2005, at the Convention Center in Providence, Rhode Island, Missy (124 lbs) won an animated 10-round unanimous (97-94,99-91,96-93) decision over Esther Schouten (5'5", 124 lbs) of Hoorn, Holland for the vacant IWBF Featherweight title.

On May 18, 2006 at the Convention Center in Providence, Rhode Island, Missy (131 lbs) took on her local rival Jaime Clampitt (134¾ lbs) of Narragansett, Rhode Island who was the reigning IWBF Lightweight champion, in a highly-anticipated showdown. The bout lived up to advance expectations as 10 rounds of non-stop excitement, culminating in a unanimous (97-94,96-94,96-94) decision for the hard-charging Fiorentino.

On January 26, 2008 at the SportsPlex in Mansfield, Massachusetts, Melissa won a technical decision over Ela "Bam Bam" Nunez of Jamestown, New York when their scheduled ten-rounder was stopped in the sixth because Fiorentino had been badly cut by an accidental head-butt. Fiorentino was ruled the winner by the 60-54,59-55,57-57 majority score then on the judges' cards.

Fiorentino fought professionally from 2001 to 2008, with an accumulative boxing record of 17-2-0 (6KO). She fought many of the elite female boxers in the world, that included Melissa Hernandez, Esther Schouten, Jaime Clampitt, Leona Brown, Trisha Hill, and more.