Frank Warren came out swinging in the direction of his promotional rival, Eddie Hearn of Matchroom Sport.

Warren was fired up over some of the recent statements made by Hearn, who was somewhat critical of the recent Las Vegas debut of Tyson Fury.

Fury, who Warren promotes, demolished no-hoper Tom Schwarz in two rounds at the MGM Grand.

Hearn felt the main event, Fury-Schwarz, and the supporting undercard - was lacking any real substance.

On the other hand, Hearn reflected on Anthony Joshua's United States debut, which took place two weeks earlier, against Andy Ruiz at Madison Square Garden in New York City.

Hearn explained that Joshua-Ruiz, combined with the undercard bouts, was a legit pay-per-view level card.

And Hearn detailed how Joshua's card had significantly sold more tickets.

In response to those statements, Warren had more than a few choice words.

"[Hearn[ claimed that Tyson Fury’s Box Office entry into Las Vegas last weekend suffered by comparison with Anthony Joshua’s US debut in New York. Besides the fact Tyson’s debut on ESPN generated a far bigger audience than AJ’s did on DAZN, I heard they hardly got any new subscribers but, more importantly, Tyson cemented his number one status and profile in the US by winning his fight in style, while brand Joshua was exposed in front of the Yanks," Warren told Talk Sport.

"It is true we could easily have chosen to follow suit and loaded up Tyson’s card with UK fighters in an attempt to justify the Box Office outlay, or we could have opted to wrap our world title show in Leeds featuring Josh Warrington vs Kid Galahad into the pay-per-view package. I understand why they chose to prop up the Anthony Joshua-Andy Ruiz fight with a clutch of fighters from home. It saves investing in your own UK shows by funding the exercise with Joshua PPV revenue and keep fighters active at someone else’s expense.

"Tyson’s US debut on ESPN was a resounding success, in and out of the ring. It was always designed to provide him with maximum exposure to the huge US audience and he more than capitalised on what was pretty much a unique showcase for a British fighter in the US. The result of the promotion is that Tyson is probably now the most familiar heavyweight to the US public and his profile is only going to get bigger.Tyson is reaching superstar status and is the No.1 heavyweight in the world. It is my job to help him make the most of the opportunities that are now in front of him.

"Matchroom and their mouthpiece-in-chief should concern themselves less about what we deliver to the fans on our Saturday night boxing and place more focus on banging the drum – and drum up a crowd – for their forthcoming hot tickets on DAZN. I bet the American audience can’t wait for his next big event when New Zealand’s Joe Parker faces off against Aussie Leapei, that is sure to be a huge subscription driver for DAZN!"