According to Dan Rafael of ESPN.com He writes: Floyd Mayweather Jr., the welterweight champ and pound-for-pound king until retiring last June, will officially end his retirement on Saturday at an afternoon news conference to announce a fight with lightweight champion Juan Manuel Marquez, multiple sources told ESPN.com.

Golden Boy promotions called the news conference late Friday, but did not reveal the particulars.

Multiple sources said Mayweather, who hasn’t boxed since knocking out Ricky Hatton in a December 2007 welterweight title defense, will fight Marquez on July 18 on HBO PPV at the MGM Grand, the same venue hosting Saturday night’s fight between junior welterweight champion Hatton and Manny Pacquiao, the man who succeeded Mayweather as the pound-for-pound king.

The sides have been close to a deal for several days but the one hang up had been the exact weight. In the end, they settled on a maximum weight of 144 pounds, a source involved with the fight told ESPN.com.

Mayweather had wanted the fight to be at 145 pounds, but Marquez (50-4-1, 37 KOs), the smaller man coming up from the 135-pound division where he is champion, wanted the weight as low as possible.

The deal was finalized Friday afternoon following a flurry of conversations over a six-hour period, another source said. Read the rest of the article click