Oscar De La Hoya has surprisingly hit out at former foe Floyd Mayweather in an open letter addressed to Floyd on Playboy.com, branding the 49-0 retired fighter “boring”.

The Mexican six-weight world champion, who lost a unanimous decision to Mayweather in May 2007, addressed his rival directly in the article, and used his 1,160 word long piece to slam Mayweather’s low-key swansong win over Andre Berto in September.

De La Hoya

“Let’s face it: you were boring. Just take a look at your most recent performance, your last hurrah in the ring. A 12-round decision against Andre Berto. How to describe it? A bust? A disaster?,” De La Hoya said to Playboy.com.

De La Hoya also accused Mayweather of avoiding fighters when they were in their prime and said that his fighter Canelo Alvarez was weight drained and too young when he challenged him.

“You won’t get in the ring unless you have an edge. Sure, you fought some big names. But they were past their prime. Hell, even when we fought in 2007 - and I barely lost a split decision - I was at the tail end of my career.

“Then later you took on Mexican megastar Saúl “Canelo” Álvarez, but he was too young and had to drop too much weight.”

Mayweather’s manager and CEO of Mayweather Promotions responded to The Golden Boy’s comments, branding him “bitter” and accusing him of simply trying to increase the interest levels in Saul Canelo Alvarez.

“He just sounds silly and bitter. Even though we know he didn’t write it, they’re just looking for storylines to generate mainstream press,” Ellerbe told Fighthype.com.

“They’re just trying to promote their fight, so they need mainstream press. What’s the biggest name they can align themselves with to attempt to create a storyline? The same name everybody uses. The biggest name that’s out there: Floyd Mayweather.

“Jealousy is a terrible thing. Who did [De La Hoya] beat in his prime? He damn sure didn’t beat Shane Mosley. He’s just bitter.”

You can read De La Hoya’s full open letter to Floyd on Playboy.com