photos

Action shots from Lucas Matthysse's dominating third-round knockout of Lamont Peterson, plus Devon Alexander's seventh-round stoppage of Lee Purdy in Atlantic City, N.J.

Weigh-in photos for Saturday's 141-pound main event between Lamont Peterson-Lucas Matthysse, plus Devon Alexander-Lee Purdy, Shawn Porter-Phil LoGreco, and Amir Khan's little brother, Haroon, who will be fighting for the second time as a pro.

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

Action shots from featherweight Abner Mares' ninth-round stoppage over Daniel Ponce de Leon on the Mayweather-Guerrero undercard.

Action shots from junior featherweight Leo Santa Cruz's fifth-round knockout of Alexander Munoz on the Mayweather-Guerrero undercard.

Action shots from J'Leon Love's split-decision win over Gabriel Rosado on the Mayweather-Guerrero undercard.

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.

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.

Danny Garcia successfully defended his RING, WBA and WBC junior middleweight titles with a unanimous decision over Zab Judah on Saturday at Barclays Center.

WBO middleweight titleholder Peter Quillin defended his belt with a seventh-round knockout of challenger Fernando Guerrero in Brooklyn.

Images from Buenos Aires of RING middleweight champ Sergio Martinez's unanimous-decision win over tough challenger Martin Murray. Photos by Juan Mabromata-AFP/Getty.

Photos from the scale as RING middleweight champ Sergio Martinez and challenger Martin Murray weighed in for Saturday's fight in Buenos Aires.

Photos from the weigh-in for the Danny Garcia-Zab Judah RING, WBC and WBA junior welterweight championship fight, and the Peter Quillin-Fernando Guerrero middleweight co-feature matchup.

Images from the final week of training as heavyweight champ Wladimir Klitschko, along with trainer Johnathon Banks, prepares to face Francisco Pianeta on May 4 in Germany.

Images from the Alamodome of Saul "Canelo" Alvarez's hard-fought unanimous decision win over a valiant Austin Trout to become THE RING's junior middleweight champion.

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

Gallery of action shots from Guillermo Rigondeaux's unanimous-decision win over Nonito Donaire at New York's Radio City Music Hall.

Photos from the New York press conference to announce WBA middleweight titleholder Gennady Golovkin's June 29 bout against British challenger Matthew Macklin.

Nonito Donaire and Guillermo Rigondeaux on the scales for their RING, WBO & WBA junior featherweight title bout at New York's Radio City Music Hall.

Nonito Donaire practiced his kicks with The Rockettes, the iconic residents of New York's Radio City Music Hall, where he will trade punches with Gullermo Rigondeaux on Saturday night.

Nonito Donaire and Guillermo Rigondeaux staged one last workout for the press ahead of their April 13 date at Radio City Music Hall in New York City.

Big gallery of action shots from Shinsuke Yamanaka TKO 12 Malcolm Tunacao, Akira Yaegashi UD 12 Toshiyuki Igarashi, and Takashi Miura TKO 9 Gamaliel Diaz.

Weigh-in photos for the April 8 card in Tokyo featuring Toshiyuki Igarashi-Akira Yaegashi, Shinsuke Yamanaka-Malcolm Tunacao, and Gamaliel Diaz-Takashi Miura.

The April 8 card in Tokyo is stacked with talent, including RING flyweight champ Toshiyuki Igarashi vs. No. 7 strawweight Akira Yaegashi...

Photos from the weigh-ins for Zou Shiming-Eleazar Valenzuela, Brian Viloria-Juan Francisco Estrada and Rocky Martinez-Diego Magdaleno at the Venetian Macau Resort.

Shots of all the combatants who will take part in Saturday's card in Macau, including star attraction Zou Shiming in his pro debut, flyweights Brian Viloria and Juan Francisco Estrada, and junior lightweights Rocky Martinez and Diego Magdaleno.

Images from the all-action rematch between Brandon Rios and Mike Alvarado on March 30 in Las Vegas. Photos by Naoki Fukuda.

Marvin Hagler was among those who joined Prince Albert of Monaco at ringside to watch Gennady Golovkin's third-round knockout of Nobuhiro Ishida on Saturday. Photos by Valery Hache-AFP/Getty.

An amped-up Brandon Rios and Mike Alvarado at the scales before their rematch this Saturday in Las Vegas. Photos by Naoki Fukuda.

Final press conference before this Saturday's rematch between Brandon "Bam Bam" Rios and Mike Alvarado in Las Vegas, which will be broadcast on HBO.

Mike Alvarado and Brandon Rios were both on hand at the Top Rank Gym in Las Vegas to promote the March 30 rematch of the all-out war they fought last year, with Rios winning by seventh-round TKO.

Flyweight titleholder Brian Viloria and two-time Olympic gold medalist Zou Shiming at the Wild Card Boxing Club preparing for their respective fights on April 6 in Macau.

Brandon Rios working out at Fortune Gym in Hollywood in preparation for his March 30 rematch against all-action opponent Mike Alvarado.

Loads of action shots from Tim Bradley's dramatic victory over hard-charging challenger Ruslan Provodnikov, who scored a knockdown in the last round but came up just short on the cards.

Welterweight prospect Jessie Vargas remained undefeated with an entertaining 10-round unanimous decision over previously unbeaten Wale Omotoso.

Tim Bradley and Ruslan Provodnikov on the scale ahead of Saturday's matchup in Carson, Calif. Both fighters weighed in at 146.6 pounds.

Fighters from the undercard of Saturday's Bradley-Provodnikov matchup -- including Jessie Vargas, Jesse Magdaleno, Andy Ruiz and Oscar Valdez -- held a media day workout in Los Angeles on Thursday.

Ahead of his May 5 rematch with Mikkel Kessler, Carl Froch was transformed into Kratos, a character from the God of War video game series, to promote the game's latest release.

Action shots from Bernard Hopkins' shutout victory over Tavoris Cloud to win the IBF light heavyweight title on Saturday night in Brooklyn.

Heavyweight champion Wladimir Klitschko and his next target, undefeated Italian Francisco Pianeta, officially announced their May 4 bout at a press conference in Germany on Wednesday.

Light heavyweight rivals Tavoris Cloud and Bernard Hopkins shook it out for the cameras along with welterweight combatants Keith Thurman and Jan Zaveck ahead of Saturday's card in New York.

Weigh-in pics for the March 2 Showtime card featuring lightweights Richard Abril vs. Sharif Bogere and featherweights Gary Russell Jr. vs. Vyacheslav Gusev.

Photos from Ishe Smith's split-decision victory over Cornelius Bundrage to take the IBF junior middleweight title in Detroit.

RING junior featherweight champion Nonito Donaire and No. 1-rated challenger Guillermo Rigondeaux at the New York press conference for their April 13 fight. Photos by Naoki Fukuda.

Undefeated welterweight titleholder Tim Bradley in the gym training for his March 16 fight against Russian challenger Ruslan Provodnikov.

Junior welterweight contender Ruslan Provodnikov training at the Wild Card Boxing Club for his March 16 title bout against Tim Bradley in Carson, Calif.

Photographer Naoki Fukuda's action shots from Adrien Broner's fifth-round stoppage of Welsh challenger Gavin Rees in Atlantic City.

Photos from the scales as Adrien Broner and Gavin Rees made weight (it's not clear if Broner's 134 pounds was before or after he downed that can of Sprite) for their fight this Saturday in Atlantic City.

WBO welterweight titleholder Tim Bradley met with Russian challenger Ruslan Provodnikov at a press conference in Los Angeles ahead of their March 16 bout in Carson, Calif.

Junior flyweight Zou Shiming -- arguably among the world's most-famous boxers, known to hundreds of millions in China for his gold medals at the 2008 and 2012 Olympics and three World Amateur Championships -- arrived in Los Angeles to train for his pro debut.