Bernard Hopkins has questioned his points defeat to Joe Calzaghe that extended the Welshman's unbeaten record to 45 fights. The veteran American lost a split decision 116-111, 115-112, 113-114 but has fiercely protested the result of the light-heavyweight content held at the Thomas & Mack Centre in Las Vegas.

"I believe I won the fight," Hopkins said. "I know questions will be asked and it was close. But when all is said and done history will reflect well on Bernard Hopkins. I got beaten tonight but it wasn't by Joe Calzaghe."

Hopkins, 43, looks likely to head back towards temporary retirement, but there are few indications he will call it a day for good after holding back the years once again despite defeat. "There comes a point where I know where I am in history," he said. "Why keep pushing the envelope when you've accomplished everything? But I came back and made $20 million from my last three fights.

"There are a lot of things I am doing besides boxing and I have an eight-year-old daughter who wants me home more than away. I think it's deserving that I give my only child some time. But the reason I came back after the two Jermain Taylor fights was to make history and prove I had a lot left. I have done that, and tonight you saw a true craftsman at work."

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