Arum

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. 

Manny Pacquiao and Tim Bradley have agreed to terms to fight on June 9 at the MGM Grand in Las Vegas.

Nonito Donaire promises that fans will get their money's worth during his fight with Wilfredo Vazquez Jr. on HBO this Saturday.

If he gets past Wilfredo Vazquez Jr. on Saturday, Nonito Donaire's promoter sees bouts against Jorge Arce, Toshiaki Nishioka and Guillermo Rigondeaux in the former bantamweight titleholder's immediate future.

Angelo Dundee, the beloved former trainer of Muhammad Ali and Sugar Ray Leonard among other hall-of-fame enshrined fighters, has died at the age of 90.

Miguel Cotto: "On May 5, stay tuned, because I will convincingly beat Floyd Mayweather."

Manny Pacquiao against Tim Bradley may be close to being finalized, Juan Manuel Marquez-Lamont Peterson could be in the works, and Floyd Mayweather Jr. chides Pacquiao as he preps for Miguel Cotto. 

Lamont Peterson has heard offers from the promoters of both Juan Manuel Marquez and Amir Khan.

Richard Schaefer says the Floyd Mayweather- Manny Pacquiao fight is nearly two years away.

Miguel Cotto is game for a clash with Floyd Mayweather Jr. if a rematch with Manny Pacquiao does not happen.