BBC Sportboxing

Joe Calzaghe is put through his paces by father and trainer Enzo ahead of his clash with Roy Jones Jr in New York

Both boxers come in just under the 175lb light-heavyweight limit at Friday's weigh-in

On the undercard, Dmitriy Salita (right) takes Derrick Campos' IBF Inter-Continental junior welterweight title in twelve rounds

As against Hopkins, Calzaghe is dropped to the canvas in the first round as Jones connects with a right hook, more wrist than knuckle

Calzaghe is stunned both by Jones' first meaningful combination and that he is on the floor in the first, two fights running

Jones takes the first two rounds without injury before Calzaghe begins to land several trademark southpaw jabs in the third

Both fighters begin to goad each other, despite the violence, showing their chins and grinning at their opponent

Blood is drawn by Jones across the bridge of Calzaghe's nose but the Welshman is throwing far more punches in rounds four and five

Jones keeps a high guard and is happy to let Calzaghe punch away, picking him off with accurate pot shots

The fight turns in the seventh round as Calzaghe lands with a right, cutting Jones' left eye and sapping the Pensicola boxer's confidence

The American's corner seem unable to stem the bleeding, and the ringside doctor is twice called to rule if Jones can continue

Instead of having exhausted himself, Calzaghe is encouraged by his opponent's wound and diminishing defences

But in the 10th Jones reminds Calzaghe and the crowd why he was a fomer four-weight champion with a decent left hook

Both fighters, battered and unrelenting, receive the praise of the crowd but it is Calzaghe victorious after 12 tough rounds

The Welshman celebrates the unanimous win, 118-109 points, with his trainer and father, Enzo, undefeated after 46 professional wins