The world of boxing has been in a frenzy this year as the UFC and boxing star Conor McGregor won a decision in the main event of UFC 196.
But what about the sport’s other biggest stars?
Is boxing’s popularity at an all-time high?
And how does the sport compare with other sports?
Find out here.
The most important question for anyone interested in boxing, though, is: “How do I make money?”
That’s because the sport has always been a cash cow.
It’s still a $6bn industry with the most famous promoter, Golden Boy Promotions, having a combined stake in the sport of boxing that makes it the world record holder in attendance.
The money is in the purse.
In 2012, Golden Boys paid $11m for the rights to broadcast the fight between Mayweather and Pacquiao.
In 2013, it paid $20m to take the fight to the US, a record-breaking deal that was set to become even more lucrative as the pay-per-view revenue jumped from $10.5m to $20.2m.
But in 2014, it pulled out of the deal because it feared the fight would lead to a spike in drug use in the US.
It said it would only pay for the cost of administering the bout, and if the UFC were to agree to pay the same amount, then Golden Boy would have a monopoly on the sport.
It is still paying the bill.
And in 2015, the sport was so far behind in terms of pay-Per-View that it was not able to keep up with demand, leading to a dramatic drop in ticket sales and a huge drop in box office revenues.
But the UFC has since backed off its plans to move away from pay-TV, citing a lack of demand.
So what is the sport really worth?
As boxing, boxing is still seen as a niche sport in the world.
There are no major sports leagues in the United States and there are no professional boxing clubs in the UK.
But that doesn’t mean it’s not a valuable niche.
According to the United Kingdom’s Sport Finance Authority, the estimated annual value of the sport in Britain is £16.4bn.
And the sport generates about £20m a year in sponsorship, which is roughly the same as football or rugby.
In the US and UK, the average annual value is around $30m.
Boxing generates around $60m a day.
The sport is also one of the most profitable sports in the history of the business, with revenue of about $300m in 2014.
It generates around £40m a week, which equates to about £11.2bn for the sport at the moment.
There is an estimated $1bn to $2bn in annual revenue for the UK boxing industry.
That makes boxing the sixth-largest revenue generator in the country.
So why aren’t there more professional boxing leagues?
Well, it’s a different story in the USA.
Professional boxing is one of boxing’s oldest and most successful sports, and the US sport has long had a history of amateur boxing.
However, amateur boxing is now banned in the entire US.
There are now just two professional boxing organisations in the states of New York and California: the New York State Boxing Commission (NYSCBC) and the New Jersey Boxing Commission.
Both have no governing body and have no set rules on how the sport should be run.
In New Jersey, New York’s biggest promoter, Steve Rosenberg, was charged with racketeering last year, after the state’s attorney general announced that he was the only boxer on the New Brunswick State Boxing Board.
Rosenberg, who owns Golden Boy, and his son Anthony Rosenberg, the promoter of the UFC, were both charged with four counts of racketeering conspiracy.
Anthony Rosenberg has also been charged with eight counts of conspiracy and fraud, including making false statements to federal investigators.
There’s a real fear that if the US is ever going to legalize boxing, the governing body will lose its powers, which could mean amateur boxing’s existence in New Jersey is going to be ended.
In 2016, a federal judge ordered the NYSCBC to stop operating until the federal government changes its rules to allow the sport to continue.
It was later allowed to resume operations.
In November 2016, New Jersey state’s Attorney General Joseph DiStefano announced he was going to take action against Rosenberg, charging him with eight additional counts of perjury and seven counts of fraud related to the fraud charges.
The Rosenbergs have also been accused of defrauding the state out of millions of dollars in gambling revenue, a charge that could be punishable by up to six years in prison.
There have been calls for a ban on boxing, which has also become a rallying cry in the fight against drug use.
And although there have been no deaths or serious injuries linked to boxing in the past year, there have still been reports of addicts taking to the streets, particularly in New York City.
But boxing isn’t the only thing on the decline