By Rick Reeno

Golden Boy Promotions CEO Richard Schaefer is disputing the recently published statements from Bob Arum, the CEO of Top Rank.

On September 15th, the two promotional rivals will go head to head with dueling events in Las Vegas.

On the Golden Boy end, Saul "Canelo" Alvarez will defend his WBC 154-pound title against Josesito Lopez, the WBC's silver champion at 147. The card takes place at the MGM Grand and Showtime will televise.

Two miles down the road, Top Rank will stage an HBO pay-per-view event at the Thomas & Mack Center. In the headliner, Julio Cesar Chavez Jr. will defend his title against mandatory challenger Sergio Martinez, who is also recognized by many as the number three pound-for-pound fighter in the world.

In an earlier article with BoxingScene.com's Keith Idec, Arum said that he possessed knowledge that the MGM's management was "very upset" because their customers are taking a pass on Canelo-Lopez and demanding tickets to Chavez-Martinez.

"And we know, internally, the MGM Grand [management team] is very, very upset. They made a commitment [to Golden Boy Promotions], which they shouldn’t have, and we then made a deal with Thomas & Mack," Arum said.

“But they are very, very upset because they’re telling their customers, ‘Come. We’ve got this fight on Mexican Independence Day.’ And their customers are saying, ‘We want you to get us tickets for the Martinez-Chavez fight.’ So they’re going to have to buy tickets from us for Thomas & Mack.”

Schaefer completely denies Arum's claims, stating that his rival's information regarding the MGM was "bullsh*t."

"[Arum] has become a joke. That's a joke. There is not more to say than that. The MGM is upset...they're upset that he keeps pissing all over them every single time. He has zero relationship skills. He doesn't understand the word relationship. He only does what's good for Bob Arum," Schaefer told BoxingScene.com.

"The only thing that I can add is that he's full of sh*t, but we all know that. I'm not going to respond to this bullsh*t anymore. Let him say whatever [because] he's full of sh*t. He can worry about his stuff and we will worry about our stuff. We are happy where we are, who we are...the relationships that we have, the partners that we have, the sponsors that we have. It's all good on the Golden Boy side."