By Miguel Rivera

A war of words has erupted between Hall of Fame boxing legends.

Roberto 'Hands of Stone' Duran has lashed out at Julio Cesar Chavez Sr. over the upcoming all-Mexican mega bout between Julio Cesar Chavez Jr. and Saul "Canelo" Alvarez, which takes place on May 6th from the T-Mobile Arena in Las Vegas.

Duran says the Mexican legend should have protected his oldest son and never allowed him to go forward with the Canelo fight, scheduled to happen at a catch-weight of 164.5-pounds.

Duran fears for the safety of Chavez Jr. and believes that he not only has absolutely no chance of winning, but will suffer a big beating in the contest.

He says Chavez Sr. should advise his son to withdraw and not go forward with this planned HBO Pay-Per-View bout.

"Look I'm being frank here, and with all due respect to Chavez, and I will say it to Chavez's face, he does not know anything about boxing. I'm talking about the father, with the respect he deserves, I do not see how his son can beat Canelo. And if his son were to beat Canelo, then I would tell Canelo to retire becaue he's finished," Duran told ESPN Deportes.

"Chavez, he knows what I'm saying, he do not know anything about boxing to beat Canelo. If I was Chavez's father, I would tell him not to go through with this fight."

"I saw Chavez's last fight and it was very bad, and he was in the ring with a dead man (Dominik Britsch) And if he thinks that Canelo is easy, I see it ending badly. This has nothing to do with size, I do not see how [Chavez] can win it, so I apologize (to Chavez Sr)... and if he gets mad I do not care, if he does not want to talk to me anymore I do not care - but your son does not beat Canelo. I'm telling you, Robert Duran is telling you."