If you missed it earlier, news came down this evening that Top Rank will not be negotiating a potential May 5 fight between Manny Pacquiao and Floyd Mayweather Jr, and instead will put their focus on a fourth fight between Pacquiao and Juan Manuel Marquez.

After hearing the news, Golden Boy's Oscar De La Hoya took to Twitter to blame Bob Arum for the fight not happening:

Does everyone now understand that bob arum doesn't want to make the paquiao fight with mayweather.

After that clear but overall fairly harmless statement, Oscar argued with Sports Illustrated writer Chris Mannix, accusing him of being "afraid" of Arum because Mannix said he would be happy to see Pacquiao vs Marquez IV and Mayweather against Sergio Martinez:

@ChrisMannixSI are you kidding me! Why are u scared of arum? Manny wants mayweather and vise versa.Arum is cheating the fans from the fight.

But it gets better. Keep in mind that De La Hoya's company just recently mended some wounds with Top Rank after the two companies refused to co-promote together starting back in 2009. This came about when earlier this year, Oscar entered rehab and made a public apology to Arum and Pacquiao, which got De La Hoya and Golden Boy dropped from a defamation lawsuit that is still ongoing against Mayweather.

Now, De La Hoya is spending his evening retweeting comments from fans, which include gems like "bob arum is a moron," "(Arum) is the biggest dick to boxing," "bobarum is a punk," "Bob Arum is a joke," and "he's a piece of shit."

So far, they've only come together to promote the September 10 fight between Yuriorkis Gamboa and Daniel Ponce De Leon. If this keeps up, and it probably will, expect that to be the last fight they promote together for a while. They've already hissed at one another a little lately, and it's just going back down the same old road.  Expect another "Cold War" between America's two biggest promotional firms.