Floyd Mayweather

UFC fighter McGregor enters a boxing ring for the first time to take on the unbeaten Mayweather on August 26.

Few in boxing circles are giving the rugged Irishman much hope.

But Holmes, a former world heavyweight champion who keeps a keen eye on the game, feels McGregor has a real chance if he can fight intelligently.

"Don't sell McGregor short, he doesn't have to do too much to win," Holmes told the Bald Faced Truth radio show in the United States.

Mayweather has decided he wants to wear eight ounce gloves instead of the normal 10 ounces according to a post on his Instagram account.

 It is an interesting move from the US fighter, which has created plenty of interest, with Mayweather and McGregor fighting at 154 pounds, with regulations stating that 8-ounce gloves cannot be used in bouts contested at more than 147 pounds.

UFC champion McGregor will step out of the octagon and into the ring to fight unbeaten boxer Mayweather in Las Vegas on August 26.

Many have weighed in on who will win the hyped fight and now Tyson has voiced his opinion as Mayweather puts his perfect 49-0 record on the line against the unproven Irishman.

"McGregor is going to get killed boxing," Tyson told Barstool Sports on Monday. "Boxing? I got mad because I thought they were going to use MMA rules against boxing because that's what it's all about: Can the boxer beat the MMA guy?"

Australia's Horn, who this month beat Manny Pacquaio to win the WBO welterweight title in Brisbane, has called out the 40-year-old five-division world champion.

But Mayweather ruled out any prospect of a fight with the former Queensland schoolteacher in front of a packed press conference in London on Friday, saying he'll hang up his gloves after facing McGregor on August 26 in Las Vegas.

"This is my last fight," Mayweather said.

"I've just done years and years and years of just fighting and travelling.

A notice of a federal tax lien filed against the undefeated fighter nicknamed "Money" shows the balance as unpaid as of March 6.

The document was filed with county officials in Las Vegas in April.

Mayweather's tax troubles come as he gets ready to come out of retirement to fight against Irish MMA star Conor McGregor in August.

The lien for 2015 is just the latest in a series of tax liens filed by the IRS against Mayweather over the past decade.

Mayweather's tax lawyer did not immediately return a request seeking comment on Tuesday.

That deal could bring another $100million dollars to his name, more than enough money to make any of his wildest dreams come true - including, perhaps, buying an NBA team. 

Mayweather met with Los Angeles Lakers great and current president of basketball operations Magic Johnson on Thursday in LA and the two apparently talked about NBA ownership.

"It's about time for me to buy an NBA team, if you're ready to sell your NBA team, please get in touch with me," Mayweather wrote on Twitter.

Writing on Instagram, Soulja Boy said: "It's going down! Signed my contract I'm leaving the fight with $1,000,000."

According to the rapper the bout will take place in March in Las Vegas and in his corner will be one of the sports all-time greats.

"I got the best ever my big bro @floydmayweather training me damn," he added.

Responding to the announcement Chris Brown told his 34 million Instagram followers it was time to stop talking.

"Now that we have your undivided attention, boxing match set," the singer wrote.

The Digicel SportsMax Fight Night is being dubbed ‘The Final Showdown’, with the pound-for-pound king Floyd ‘Money’ Mayweather declaring that the fight will be his last.

Mayweather (48-0, 26 KOs) will face Andre Berto (30-3, 23 KOs) to defend his undefeated record and WBA & WBC welterweight titles.