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Freddie Roach said he gave Julio Cesar Chavez Jr. an ultimatum prior to ageeing to train him for his next fight on Aug. 3: "The first day that you miss, Julio, I can't tolerate that. I'm going to send you home or something."

Julio Cesar Chavez Jr. and Martin Murray could meet in a clash of once-beaten middleweights on Aug. 3 in Mexico City.

Four-division beltholder Juan Manuel Marquez was ringside for Saturday night's victory by Mike Alvarado over Brandon Rios, as was WBO welterweight titleholder Tim Bradley.

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.

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.

Adrien Broner apparently bit a security guard during scuffle in Miami on Monday.

Former undisputed heavyweight champion Mike Tyson discusses the accidental death of his 4-year-old daughter, his financial troubles and his one-man show, among other things, during his upcoming profile on HBO's Real Sports, which debuts on March 19.

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

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

Golden Boy Promotions CEO Richard Schaefer says Floyd Mayweather's move to Showtime ends the days when the network could not compete with rival U.S. cable giant HBO.

Kevin McBride said his reasons for continuing to fight have little to do with money as much as "restoring sanity in my own head."

IBF junior middleweight titleholder Cornelius Bundrage looks to revive his native Detroit with a Feb. 23 victory over Ishe Smith that he hopes will earn him a mega bout opposite Floyd Mayweather or Saul "Canelo" Alvarez.

Former RING middleweight and light heavyweight champion Bernard Hopkins recounts his experiences at Madison Square Garden on Wednesday night.

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

People have always predicted big things for Brian Viloria but his past performance has been inconsistent; with renewed passion for the sport he aims to deliver on those expectations with this Saturday's flyweight unification against Hernan "Tyson" Marquez.

RING heavyweight champion Wladimir Klitschko dominated Mariusz Wach for his 17th straight win on Saturday.

RING heavyweight champion Wladimir Klitschko is both lighter and shorter than Saturday night's challenger, Mariusz Wach, whom he will face in the wake of the death of longtime trainer, Emanuel "Manny" Steward.

Wladimir Klitschko: "I will defend the titles that I won together with Emanuel Steward."

Brooklyn's Paulie Malignaggi is part of a championship legacy that includes Mike Tyson, Riddick Bowe, Michael Moorer, Eddie Mustafa Muhammad and Zab Judah.

Three men have been arrested in connection with the shooting death of former WBO heavyweight titleholder Corrie Sanders.

Promoter Don King, who turns 81 on Aug. 20, invited Pygmies to the "Rumble In The Jungle," claims to be able to communicate with Floyd Mayweather in "ghetto-ese," and once killed a man -- just a few stories from the life of the man who coined the phrase "Only in America."

WBC welterweight titleholder Floyd Mayweather Jr. will earn an all-time record purse of $32 million for Saturday night's clash with WBA junior middleweight beltholder Miguel Cotto.

Manny Pacquiao has joined other celebrities in a new Hennessy ad campaign that aims to inspire people to "reach new and greater levels of achievement."

Eight months after doing a "terrible" job at his first announcing gig, Michael Buffer worked a Roberto Duran fight at Madison Square Garden. "I was completely dreadful...So I was kind of lucky to have gotten my foot back into the door."

After landing in Washington, D.C., Amir Khan hopes to land his 27th career victory over Lamont Peterson on Saturday.

Stephen Espinoza was named Showtime's new executive vice president and general manager for sports programming, replacing HBO-bound Ken Hershman.

Seth Mitchell takes a step up against Timur Ibragimov on the Amir Khan-Lamont Peterson undercard on Dec. 10.

Victor Ortiz did not choke when  Floyd Mayweather Jr. grabbed him by the throat at Friday's pre-fight weigh-in.

Floyd Mayweather Jr.: "I'm going to finish you off." Victor Ortiz: "I'm going to put you on your (butt)."

Floyd Mayweather Jr.: 'Me and Oscar may not see eye-to-eye, but me and Richard Schaefer do good business. Great business I should say.'

Underdog challenger Tomas Adamek will play "David" against "Goliath" when he meets WBC heavyweight titleholder Vitali Klitschko in Poland, where he is the favorite of cab drivers everywhere