Mayweather Promises That McGregor Will Not See The Final Bell

After months of trading verbal blows and showboating it's time for Conor McGregor and Floyd Mayweather Jr. to let their fists do the talking.

Both pugilists came together in a fight promotion, promising to knock each other out in their highly anticipated boxing clash on Saturday night.

"It's work," Mayweather said when asked if he was having fun. "My job is to be a fighter."

McGregor, meanwhile, reiterated his vow to knock Mayweather out within two rounds, and claimed the boxer was getting desperate in making comments about his weight and stamina.

The crowd for one of the final promotional events was small and not terribly vocal, especially after waiting an hour or two in immense heat to see the fighters.

There was no one in line at T-Mobile Arena's three ticket windows, where plenty of expensive tickets remain for the bout.

The big money for the two fighters will come from pay-per-view sales, and early indications are that it could break all records. Some 50 million people may watch in the United States alone, with millions more tuning in worldwide.

Estimates vary wildly, but Mayweather could pocket $200 million while McGregor might make $100 million.

The promotion has been more circus-like than anything, but both boxers said they were serious about putting on an explosive show on fight night.

"This fight is not going to go the distance," Mayweather said.

Both fighters seemed relaxed and confident, just days away from a fight that seemed improbable at times and impossible at other times. Yet they will meet under boxing rules in a scheduled 12-round fight that matches a UFC champion who has never boxed professionally against the master defensive fighter of his time.

McGregor said it was just another progression in his fighting career, and chided Mayweather for saying he hopes the referee does his job and doesn't allow McGregor to try any mixed martial arts moves against him.

While looking as fit as ever and insisting he is taking the fight seriously, Mayweather said he will be doing meet-and-greet experiences every night living up to the fight at his new strip club just off the Las Vegas Strip.

"I'll be at the Girl Collection every day this week," he said. "Every day."