Joe Calzaghe still expects to retire if he beats Roy Jones in November but has left the door open by admitting: "I'll never forgive myself if I lose my last fight".

The undefeated super-middleweight and light-heavyweight world champion has long maintained he intends to quit with his 100% record intact.

The fight against former pound-for-pound king Jones had been expected to be a farewell bout but Welshman Calzaghe, 36, has left the door slightly ajar.

"At the moment I'm definitely going to retire," he told Setanta Sports News.

"As long as I win and I win in style then it will be my last fight.

"I've achieved everything I can in boxing. I'm 36 years old and I don't want to keep on fighting. I love boxing and I love what the sport has given me, but I want to retire undefeated."

Calzaghe will face Jones at New York's Madison Square Garden on November 8 after their original September date was postponed when the Welshman suffered a wrist injury.

Jones, 39, was regarded as the world's finest fighter until a shock defeat by Antonio Tarver in 2004 prompted a startling fall from grace.

"Roy Jones went through a bit of a tough time in his career but he's come back and had three great wins," said Calzaghe.

"I can't underestimate him. I have to make sure I'm 100%.

"I'll never forgive myself if I lose my last fight having been undefeated for the last 17 years."

Calzaghe, who became an unofficial two-weight world champion by defeating leading light-heavyweight Bernard Hopkins in April, insists preparations are back on track despite the injury.

He said: "Before I injured my hand I was training for two or three weeks so I've only had a little bit of time off.

"Although I've not been punching, I've been jogging to keep my fitness levels up."

"I normally prepare 12 weeks before a fight and I won't start sparring for another six weeks. So I'm ahead of schedule and have plenty of time to get in shape for the fight."