Mayweather

"I really felt like there was a death...I knew that I had made a horrible call in the 11th round," Nevada referee Russell Mora told RingTV.com of his failure to penalize Abner Mares for clear low blows in the first Joseph Agbeko fight.

Manny Pacquiao is requesting random drug testing in advance of his Nov. 23 clash with Brandon Rios.

Lamont Peterson's trainer believes that a victory over Lucas Matthysse could "put him in the lotto for a fight with someone like Floyd Mayweather."

The action from Floyd Mayweather Jr. vs. Robert Guerrero, as seen through the lens of RING photographer Naoki Fukuda.

Floyd Mayweather Jr. and Robert Guerrero on the scales in Las Vegas, plus undercard bouts Daniel Ponce de Leon-Abner Mares and Leo Santa Cruz-Alexander Munoz.

Abner Mares: "I actually added something different to my training camp, and it's called 'Mexican Judo.' It's 'ju-don't know if I'm going to box, or ju-don't know if I'm going to brawl, but you do know that I'm going to win.'"

Now just three days from "May Day," the teams of welterweight combatants Floyd Mayweather Jr. and Robert Guerrero stood at the podium for the last time before Round 1 ... and no one's in a fighting mood more than Guerrero's dad.

Fans provide questions and comments on tomorrow's Danny Garica-Zab Judah and Sergio Martinez-Martin Murray RING championship bouts; more feedback on Alvarez-Trout, Donaire-Rigondeaux and Fury-Cunningham, and other subjects in this week's Friday mailbag. Enjoy!

On Saturday, CBS will air a documentary examining the life and career of Floyd Mayweather Jr. and May 4 rival Robert Guerrero, whom he will fight on Showtime Pay Per View. 

Robert Guerrero on Floyd Mayweather: "You've got a lot of people out there who think that Floyd is like a God. He's got everybody thinking that... nobody can beat him. But... being a big believer in God, there's a blueprint for everybody."

Floyd Mayweather Jr. on being in jail: "You can be locked up and be rich, but it's just like being poor if you don't have freedom. So, freedom is very, very important."

Retired boxer Micky Ward once posed for a photo with Boston Marathon bombing suspect Tamerlan Tsarnaev, who was a former amateur boxing champion in New England.

Floyd Mayweather Jr.'s father, Floyd Sr., says he'd be down for a fight against Robert Guerrero's father/trainer, Ruben, who has referred to the Mayweathers as "clowns."

CBS Sports Network is showcasing over 10 hours of coverage surrounding Floyd Mayweather's debut fight on Showtime PPV against Robert Guerrero on Saturday, May 4.

IBF welterweight titleholder Devon Alexander has been ordered to make his next defense against unbeaten Kevin Bizier, whom he could face as part of the May 18 Peterson-Matthysse card on Showtime.

The media turned out in force to watch Robert Guerrero work out in preparation for his May 4 fight against Floyd Mayweather Jr.

IBF welterweight titleholder Devon Alexander hopes to remain on the May 18 Showtime doubleheader from Boardwalk Hall in Atlantic City even though his original opponent Kell Brook has pulled out with an injury.

Nonito Donaire on his final press conference staredown with Guillermo Rigondeaux: "Today was my moral victory in terms of me being able to face off against him. I know that he felt my energy and that's why maybe he looked away from me."

Showtime's five-part documentary series All-Access: Mayweather vs. Guerrero will premiere on Wednesday in advance of their May 4 pay-per-view fight at MGM Grand in Las Vegas. Respected Hip-Hop artist and actor Common will narrate the series. 

Junior middleweight contender Carlos Molina could challenge IBF beltholder Ishe Smith in July, according to his promoter, Leon Margules.

Former WBC 122-pound titleholder Abner Mares on his upcoming fight with Daniel Ponce de Leon on the Mayweather-Guerrero card: "I'm taking this big step and I hope that we can steal the show that night."

Former WBC 122-pound titleholder Abner Mares on the Nonito Donaire-Guillermo Rigondeaux junior featherwieght championship bout: "I see Nonito winning by knockout. I estimate a seven-round knockout by Nonito if Rigondeaux doesn't just run and box all night."

Richard Schaefer on Golden Boy Promotion's new deal with Fox Sports: "For Golden Boy, it is one of the most significant, if not, the most significant television deals we have ever put together."

A new deal between Golden Boy and Fox Sports will result in a new Monday boxing series and allow fans to rewatch classic bouts from the promoter's fight library featuring Floyd Mayweather, Oscar De La Hoya, Manny Pacquiao and Bernard Hopkins, among others.

Danny Garcia on Zab Judah's perceived advantage in the ring: "When you get hit, it don't matter how much experience you've got. If you can't take the punch, that's the only thing that matters."

HBO's Ken Hershman has severed ties with Golden Boy "to focus our efforts and resources on those strategic relationships where we better share common goals and business philosophies."

Juan Manuel Marquez will consider a fifth fight with Manny Pacquiao, and if not, the Mexican legend will look at bouts against unbeaten boxers Tim Bradley or Brandon Rios, according to Bob Arum.

WBA welterweight beltholder Paulie Malignaggi looks forward to calling Floyd Mayweather's bout on Showtime Pay Per View, and would also welcome the opportunity to fight on his undercard. 

Ageless Hall of Fame ring announcer Michael Buffer will be profiled on HBO's debut series "Cornered" on March 5.

WBA junior middleweight beltholder Austin Trout on a potential clash with WBC counterpart Saul "Canelo" Alvarez: "I'm just waiting for the paperwork."

Golden Boy CEO Richard Schaefer said a 154-pound unification clash between Saul "Canelo" Alvarez and Austin Trout could be finalized by next week.

IBF lightweight beltholder Miguel Vazquez will face WBO counterpart Ricky Burns as part of an EPIX-televised quadrupleheader on March 16.

Leo Santa Cruz has vacated his IBF bantamweight belt in favor of rising into the junior featherweight division. 

WBO middleweight titleholder Peter Quillin is in the mix of a division that includes RING/WBC champ Sergio Martinez, WBA and IBF counterparts Gennady Golovkin and Daniel Geale, as well as ex-beltholder Julio Cesar Chavez Jr.

Unbeaten welterweight Dusty Harrison has entered into an agreement with Washington-based attorney Jeff Fried to handle his budding career.

Floyd Mayweather's triumphs over Ricky Hatton, Shane Mosley and Victor Ortiz are among those featured in a four-day, four-night series of classics by Golden Boy and FOX Deportes.

HBO's exiting Larry Merchant: "I'm proud to be associated with so many talented people who made us into a groundbreaking network."

Fights involving multi-belt winners Floyd Mayweather, Bernard Hopkins and Shane Mosley are part of the plans of Golden Boy CEO Richard Schaefer for the year 2013. 

The uncle and trainer of Floyd Mayweather said he would like for his next fight to be against Tim Bradley.

Strength and conditioning guru Angel Hernandez claims that trainer Freddie Roach has accused Juan Manuel Marquez of having used performance enhancing drugs out of fear that his fighter will defeat Manny Pacquiao on Saturday night.

WBA junior middleweight titleholder Austin Trout plans to make a bloody mess of challenger Miguel Cotto, who claims the champion's southpaw style won't be a problem.

The prospect of a highly-anticipated clash of junior featherweights between Abner Mares and Nonito Donaire was among the many topics broached by Golden Boy CEO Richard Schaefer in New York on Wednesday.

Oscar De La Hoya says Adrien Broner "is Floyd Mayweather, [Bernard] Hopkins, myself...all wrapped into one."

Mexican amateur sensation Jose Ramirez participated in his first workout under the Top Rank banner at The Wild Card in Hollywood, Calif., on Wednesday, and will make his professional debut on the Dec. 8 undercard of Manny Pacquiao-Juan Manuel Marquez IV.

Paulie Malignaggi: "Floyd Mayweather gets no appreciation, but he's just so dominant, that they have to just deal with it...I'm not saying that I'm as dominant as Floyd, but I consider myself to be a real craftsman of the sport. I'm a true craftsman of boxing."

WBC junior middleweight titleholder Saul "Canelo" Alvarez has directed Golden Boy officials to launch an all-out effort to make his next fight on May 5 against either Floyd Mayweather Jr., Miguel Cotto or Sergio Martinez.

Of unbeaten lightweight Adrien Broner, hall-of-famer and fellow Cincinnati native Aaron Pryor says it's okay to be "a little bit cocky... but you gotta win."

Golden Boy Promotions would like to add British 2012 Olympic super heavyweight gold medalist Anthony Joshua to a stable that already boasts unbeaten American fighters Seth Mitchell and Deontay Wilder.

The California State Athletic Commission denied Antonio Tarver's request for a shortened suspension in the wake of his positive post-fight drug test for the banned anabolic steroid drostanolone.