The five other boxers had already spoken on Friday afternoon before Amir Mansour grabbed the microphone and looked around the stage.

"Everyone seems to have a story of their own about getting through obstacles," said the 41-year-old heavyweight at a news conference in Atlantic City. "And a lot of people that know my story know that I had a rough road to get to this point."

Undefeated in 19 fights with 14 knockouts, Mansour spent a combined 16 years and seven months in prison. Twice he derailed his career because of drug charges.

A win Saturday in Atlantic City against 38-year-old Kelvin Price (14-1, 6 KOs) could put the Middletown, Del., native on track for a top-10 rating.

In prison, Mansour said he fought with knives inside 10-foot-by-10-foot cells. So how could he be afraid of a man wearing boxing gloves?

The 12-round bout at the Resorts Hotel is the main event of NBC Sports Network's Fight Night.

"If he doesn't have a nine millimeter or a shotgun in that ring, then there's no stopping me," said Mansour, who trains at Joe Hand Gym in Northern Liberties. "That's the only thing that's going to stop me. I'm not going to be denied."

On the undercard, West Philadelphia's Steve "U.S.S." Cunningham (25-6, 12 KOs) returns from an eight-month layoff to fight heavyweight Manuel Quezada (29-7, 18 KOs).

Cunningham spent the summer in Europe as a sparring partner with Wladimir Klitschko and former foe Tyson Fury.