Arum

Former three-time welterweight titleholder Antonio Margarito announced that he is retiring from boxing on his Facebook page on Thursday.

Tim Bradley on Manny Pacquiao: "I'm ready. I'm ready to shock the world. I'm ready to do whatever it takes to win this fight. It's going to be a great fight. Let's get it on, baby. It's going to be a war."

Manny Pacquiao's trainer, Freddie Roach, believes the fighter's marital troubles might have factored in to his sub-par performance against Juan Manuel Marquez in November.

Manny Pacquiao and Floyd Mayweather were close to finalizing a deal to fight in 2010, according to documents.

Bob Arum: "Tim Bradley is so confident that it's scary. I mean, he is absolutely 100 percent convinced that he's winning the fight" against Manny Pacquiao on June 9.

Bob Arum on Mike Jones: "Depending on how Mike does in this fight with Randall Bailey, you know, he would be in the future mix for Manny Pacquiao or for Tim Bradley."

Tim Bradley: "It feels great to get the fight with Manny Pacquiao. It’s going to feel even better when I beat him. You can take that to the bank." 

Nonito Donaire and Brandon Rios will be the featured fighters in an HBO-televised double-header from the Home Depot Center in Carson, Calif., on July 7.

Although he calls Tim Bradley a "handsome" fighter, Manny Pacquiao's ready to mess up the challenger's pretty face. 

Juan Manuel Marquez won't be fighting on July 14, but could re-enter the ring sometime this summer.

Eleven boxing insiders give their thoughts on Lamont Peterson's and Andre Berto's recent failed drug tests, which resulted in the cancellation of two high-profile rematches, and the sport's challenge of properly screening for performance enhancing substances.

WBC middleweight beltholder Julio Cesar Chavez Jr. has split with strength and conditioning coach Alex Ariza in advance of his June 16 defense against southpaw Andy Lee.

Tim Bradley on Manny Pacquiao: "This guy is beatable. I'm going to prove it to everybody." 

According to Bob Arum, Manny Pacquiao's lifestyle changes have manifested as a renewed vigor that can clearly be seen in his training camp for the June 9 fight against Tim Bradley. 

WBC middleweight beltholder Julio Cesar Chavez Jr. has agreed to defend his belt against RING champion Sergio Martinez should Chavez get beyond a June 16 defense against Andy Lee.

Floyd Mayweather Jr. was outspoken, pensive and animated during a session with reporters on Tuesday, with the majority of his attention targeting Manny Pacquiao.

Julio Cesar Chavez Jr. will defend his WBC middleweight belt against Andy Lee in El Paso as originally planned. 

Top Rank CEO Bob Arum called it a "racist" move for by the University of Texas at El Paso Board of Regents to cancel the Julio Cesar Chavez Jr.-Andy Lee fight that was scheduled for June 16 at the univerity's Sun Bowl Stadium.

Manny Pacquiao is ranked No. 4 on Forbes.com's top 10 most influential athletes in America, ahead of New England Patriots' QB Tom Brady among other notable American pro athletes, such as Knicks guard Jeremy Lin.

It appears that newly-crowned WBC junior featherweight beltholder Abner Mares will have to wait in line for a shot at RING No. 4-rated pound-for-pound fighter, Nonito Donaire, his WBO counterpart.

The WBC has ordered the promoters of Erislandy Lara and Vanes Martirosyan to begin a free negotiations' period that will end on May 18; Bob Arum, promoter of Martirosyan, calls it "a joke."

Middleweight Jesse Hart, son of Eugene "Cyclone" Hart, will debut for Top Rank Inc. on the June 9 undercard of the main event featuring Manny Pacquiao and Tim Bradley.

Charges against Kelly Pavlik stemming from a DUI arrest in December have been dropped, clearing the way for Pavlik to return to California to train for his next fight, on June 8.

Juan Manuel Marquez could defend his WBO interim junior welterweight belt opposite Mike Alvarado, Mercito Gesta or Brandon Rios at Dallas Cowboys Stadium on July 14, according to Top Rank CEO Bob Arum.

The attorney for Yuriorkis Gamboa claims that the fighter's contract with co-promoters Arena Box and Top Rank is invalid and has filed for dismissal from from Top Rank's lawsuit for breach of contract.

Richard Abril believes that he will end the winning streak of Brandon Rios and hand the hard-punching former titleholder his first loss on Saturday night. "I am more Mexican than Rios," he said.

Manny Pacquiao's charity foundation will get a new board of directors in the wake of a lawsuit leveled against it for a shipping controversy.

Brandon Rios and Richard Abril delivered another heated confrontation during a Monday press conference in Los Angeles, and both fighters are eager to settle matters in the ring on Saturday.

RING middleweight champion Sergio Martinez has faith that he will face the winner of the upcoming title bout between WBC beltholder Julio Cesar Chavez Jr. and Andy Lee in September. 

RING middleweight champion Sergio Martinez has signed a deal meant to guarantee him a shot in September against the winner of a June title clash between WBC beltholder Julio Cesar Chavez Jr. and Andy Lee.

Juan Manuel Marquez is driven by his zeal for a fourth bout with Manny Pacquiao: "That's the single factor is that I want the rematch. I want the rematch with Manny. The factor that returned me to this sport is that I want the rematch."

Kelly Pavlik acknowledges that Saturday night's clash with Aaron Jaco may be his last chance to resurrect a once-successful career.

The death of boxing historian Bert Sugar leaves a hole in the heart of the sport, say his colleagues and admirers.

Brandon Rios could meet Juan Manuel Marquez on July 14 at Dallas Cowboys Stadium if the two of them defeat difficult opponents on April 14.

Brandon Rios will face Richard Abril instead of Yuriorkis Gamboa, whose co-promoter, Top Rank, has filed a lawsuit charging breach of contract.

Juan Manuel Marquez will pursue his fourth title belt over as many different weight classes against junior welterweight Cesar Rene Cuenca on April 14.

Retired "Raging Bull" Pawel Wolak aims to transition from boxing to mixed martial arts

Tim Bradley's prediction that Devon Alexander would dominate Marcos Maidana turned out to be true, and now Alexander's trainer, Kevin Cunningham, is offering his own prediction: that Bradley will defeat Manny Pacquiao.

Manny Pacquiao wants to defend his WBO welterweight belt against Tim Bradley, fight perhaps twice more, and then, call it a career.

Manny Pacquiao could share the stage with NBA star Jeremy Lin next week.

Nonito Donaire has targeted the first defense of his WBO junior featherweight belt on HBO on June 16.

Juan Manuel Marquez says Tim Bradley has the skills to compete, but does not have the power to defeat Manny Pacquiao.

Amir Khan: "Lamont Peterson and his people were really playing hard to get. To me, I don't think that they really wanted the fight. To me, they were afraid to take the fight."

Lamont Peterson and Amir Khan have inked their names on the dotted line for an HBO-televised rematch on May 19 at the Mandalay Bay Hotel in Las Vegas.

Nonito Donaire's blood-soaked hand wrap was not the result of any broken bones, but a vein that ruptured during Saturday night's victory over Wilfredo Vazquez Jr.