American Bernard Hopkins weighs in at 173lbs at Friday's official weigh-in ahead of Sunday's fight
And Joe Calzaghe is also 173lbs - two pounds below the limit - as he prepares for his debut at light-heavyweight
At the time-honoured post-weigh-in scuffle, Hopkins tells Calzaghe: "I'm going to bust out your heart."
And for the first time this week, Calzaghe hits back with some own insults of his own before being pulled away
Calzaghe fan Aaron West is one of 4000 fans from Wales who attended the weigh-in
Rocky star Sylvester Stallone is a star guest at the weigh-in - and takes the opportunity to show off his muscles
Thursday is radio day and Calzaghe compares his 73-inch reach with an interviewer
Despite the hype, the fight is being held off the Las Vegas Strip at the Thomas and Mack Center
Calzaghe has been world champion for a decade but this is the first time the Welshman has fought in the USA
Undisputed super-middleweight champion Calzaghe is undefeated in 44 fights but faces Hopkins at the light-heavyweight limit
Newbridge southpaw Calzaghe, 36, has vowed to "retire and never show my face in public again" if he loses to the 43-year-old Hopkins
'The Executioner', beaten four times in 53 bouts, is one of only seven men - including Calzaghe - to have held world titles for 10 years
Calzaghe has longed for a super-fight against former middleweight king Hopkins, widely regarded as the world's best at the 175lb limit
Pound-for-pound great Hopkins has stirred up controversy with his claim he "would never let a white boy beat me"
Joe Calzaghe is in relaxed mood as he shadow boxes during his open workout at the Planet Hollywood Hotel on Tuesday
Hopkins takes part in a separate workout in front of the public and looked trim and focused
Wednesday sees Hopkins sharing a joke with Enzo Calazaghe but he later aims a vicious verbal volley at his opponent's dad and trainer
A relaxed-looking Calzaghe family attend the world premiere of Al Pacino's new film '88 minutes'