Sergio Martinez

Sergio Martinez narrowly outpointed Martin Murray to retain his RING and WBC middleweight titles in front of 50,000 fans in his native Argentina on Saturday, but the 38-year-old veteran suffered a knockdown and showed signs of aging.

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.

Showtime boss Stephen Espinoza calls the open dialogue regarding religion between Robert Guerrero and Floyd Mayweatther Jr. "refreshing" albeit "not always a comfortable conversation."

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

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!

Sergio Martinez, who used to emulate the styles of great right-handed fighters by watching a mirror image of their fights on a TV screen, has made a habit out of turning things around in his favor. Martinez defends his RING and WBC titles against Martin Murray in his native Argentina on Saturday.

Sergio Martinez's promoter, Lou DiBella, believes there's no doubt that the middleweight champion deserves mention alongside legendary Argentine Carlos Monzon.

Unbeaten British middleweight contender Martin Murray, who held Felix Sturm to a controversial draw in a 2011 title bout, says he now has the experience to topple Sergio Martinez this Saturday in THE RING champ’s home country of Argentina.

Should Floyd Mayweather Jr. get beyond a May 4 date with Robert Guerrero at the MGM Grand, he could return to that site on Sept. 14 and go head-to-head with a potential clash between Tim Bradley and Juan Manuel Marquez.

RING and WBC middleweight champion Sergio Martinez is 6-1 with four knockouts in his past seven fights, all of which are featured in an HBO showcase of his "greatest hits."

A return bout between Sergio Martinez and Julio Cesar Chavez Jr. would have to include Olympic-style drug testing and take place either in Las Vegas, Atlantic City or New York, according to Martinez's advisor.

Mexican middleweight prospect Gilberto Ramirez takes on Colombian veteran Dionisio Miranda in the co-featured fight to the WBC 122-pound title bout between Victor Terrazas and Cristian Mijares on Saturday in Mexico City.

Ricky Hatton believes Martin Murray will match anything achieved by a British boxer -- past or present -- should he upset Sergio Martinez in a week from this Saturday in the WBC middleweight titleholder’s backyard of Buenos Aries, Argentina.

Middleweight contender Matthew Macklin claims that he will handle unbeaten WBA titleholder Gennady Golovkin in similar fashion to how Bernard Hopkins knocked out then-undefeated Felix Trinindad in the 12th round.

Lou DiBella erupted during an interview with boxing writers following the kick-off press conference for the Gennady Golovkin-Matthew Macklin fight, directing much of his ire at RingTV.com contributor Mike Coppinger. (Warning: DiBella uses some colorful language during the interview.)

Unbeaten welterweight contender Kell Brook has suffered yet another foot injury that could jeopardize his scheduled challenge to IBF beltholder Devon Alexander for the third time.

WBA middleweight titleholder Gennady Golovkin will be after his 14th straight stoppage victory against ruggged Matthew Macklin on June 29.

Sergio Martinez on flooding in his native Argentina: "I want to send my deepest condolences and all of my sympathy to the people of Buenos Aires. What has happened there is terrible."

Heavyweight Tyson Fury is 12 years younger, six inches taller and will be significantly heavier than his rival Steve Cunningham when they meet on April 20.

Junior middleweight contender Erislandy Lara: "If I could pick my next three fights, it would first start with the winner of the fight between Canelo Alvarez-Austin Trout, and then I would want to fight Sergio Martinez or Floyd Mayweather."

Unbeaten super middleweight contender Edwin Rodriguez will face Ezequiel Osvaldo Maderna as part of Saturday night's Monte Carlo Million Dollar Super Four tournament.

Top Rank CEO Bob Arum would like to "mix-and-match" Brandon Rios, Manny Pacquiao, Juan Manuel Marquez and Tim Bradley over the course of the next few months.

Bob Arum: "If the Nevada Commission has one standard of punishment for Americans, and one standard of punishment for Mexicans, then they should say that."

The Nevada State Athletic Commission on Wednesday voted 3-2 to suspend and fine lightweight prospect Mickey Bey, of Cleveland, for having tested positive for high levels of testosterone.

Undefeated WBA middleweight titleholder Gennady Golovkin answered fan questions about who the thinks would give him the best fights at 154, 160 and 168 pounds; and about dream matches vs. Julio Cesar Chavez Jr. and Floyd Mayweather.

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."

Former undisputed heavyweight champion Mike Tyson will be profiled on HBO Real Sports, which debuts on March 19.

It appears that Adrien Broner will fight Paul Malignaggi on HBO on June 22 and that Julio Cesar Chavez Jr. will return on the same network on June 29. It was thought that Broner and Chavez were targeting the same June 22 date.

Undefeated Russian heavyweight Magomed Abdusalamov will pursue his 18th knockout in as many wins on the April 27 undercard of a main event featuring RING middleweight champion Sergio Martinez against unbeaten British contender Martin Murray.

Saul Alvarez says he's focused on his 154-pound title unification bout with Austin Trout on April 20, but he also says wants to headline a big show on Sept. 14 even if it competes with Floyd Mayweather's planned pay-per-view date.

Former WBC middleweight beltholder Julio Cesar Chavez Jr. can resume his fighting career after June 15, in accordance with a nine-month suspension handed down on Thursday by the Nevada State Athletic Commission as a result of his positive drug test for marijuana use.

Referee Tony Weeks on stopping IBF junior welterweight beltholder Lamont Peterson's triumph over ex-titleholder Kendall Holt in the eighth round: "Some fighters just have too much heart, and we have to save them from themselves."

Referee Tony Weeks will make his East Coast debut with Friday night's Lamont Peterson-Kendall Holt fight at The D.C. Armory in Washington, D.C.

Robert Guerrero: "I'm a man of faith. I'm a man of God, and I feel that God has put me in this position for a reason: Not to humble the world of boxing, but to humble Floyd Mayweather."

Unbeaten lightweight prospect Mickey Bey has tested positive for high levels of testosterone following his third-round knockout of Robert Rodriguez on Feb. 2 in Las Vegas, Nev.

Veteran referee Tony Weeks will work Friday night's title bout between IBF junior welterweight beltholder Lamont Peterson and ex-beltholder Kendall Holt.

RING middleweight champion Sergio Martinez is featured in Argentina's most recent edition of Rolling Stone magazine. Martinez defends his title against Martin Murray on April 27 in Argentina.

Julio Cesar Chavez Jr.'s case regarding his positive drug test for marijuana metabolites following September's loss to Sergio Martinez will be heard on Feb. 28, according to Nevada State Athletic Commission executive director Keith Kizer.  

Peter Quillin answers fans' questions about his April 27 WBO middleweight title defense against Fernando Guerrero, potential showdowns with RING champ Sergio Martinez and WBA counterpart Gennady Golovkin, and other subjects in the first episode of REAL TALK.

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.

Attorneys for Julio Cesar Chavez have requested a maximum six-month suspension and a $10,000 fine as a penalty for his positive drug test for marijuana following September's loss to Sergio Martinez. Chavez can be suspended for up to a year and fined the entire amount of his $3 million purse, or a combination of both.

WBO featherweight titleholder Orlando Salido aspires to a similar performance against Mikey Garcia as he had during two knockout victories over Juan Manuel Lopez. 

WBA middleweight titleholder Gennady Golovkin is in pursuit of his 12th straight knockout victory against Gabriel Rosado, a winner of seven straight, five by stoppage during that run.

Julio Cesar Chavez's positive post-fight drug test case will be reviewed in February; Plus, a Paul Williams update and a look at 6-foot-5 junior middleweight prospect Alantez Fox.

Attorneys for former WBC middleweight titleholder Julio Cesar Chavez Jr. will address his positive post-fight drug test for marijuana as well as his future before the Nevada State Athletic Commission on Tuesday. 

Unbeaten middleweigt beltholder Gennady Golovkin on fighting Gabriel Rosado: "First round, hard work, hard fight. Second round, hard work... by the fifth round, I will knock him out."

Trainer Abel Sanchez calls WBA middleweight titleholder Gennady Golovkin a "Mike Tyson-esque kind of individual that goes out there to kind of search and destroy."

An injury to RING super middleweight champion Andre Ward's right shoulder has forced the cancelation of a scheduled March 2 defense against former middleweight champ Kelly Pavlik.

Tim Bradley-Lamont Peterson II and the anticipated Brandon Rios-Mike Alvarado rematch could be in the works for March, according to Top Rank CEO Bob Arum.