Conor McGregor net worth is estimated at about $200 million in 2026, based on public wealth estimates, reported fight earnings, business-sale reporting, endorsement history, and known ventures. That number is not exact cash in the bank. It is an estimate of assets, business value, career earnings, and likely holdings after taxes, spending, legal costs, and private investments.
McGregor is one of the most famous fighters in UFC history. He turned MMA stardom into major paydays through UFC pay-per-view events, the 2017 Floyd Mayweather boxing match, Proper No. Twelve Irish Whiskey, acting, brand deals, and newer combat-sports investments.
This article covers his latest estimated net worth, 2025 vs. 2026 change, income sources, businesses, career timeline, assets, rankings, controversies, comparison with similar fighters and combat-sports stars, and FAQs. It also explains why different sites give different numbers and how this estimate was built.
Quick Answer
Conor McGregor is an Irish mixed martial artist, businessman, former UFC featherweight and lightweight champion, and one of the biggest pay-per-view stars in combat sports.
His latest estimated net worth is about $200 million. His biggest wealth drivers are the Proper No. Twelve whiskey sale, UFC and boxing paydays, endorsements, and business ownership.
Estimates vary because McGregor owns private businesses, exact taxes and debts are not public, fight contracts are not fully disclosed, and brand value can change after legal or reputation issues.
Net Worth Snapshot Table
| Item | Details |
|---|---|
| Full name | Conor Anthony McGregor |
| Known as / nickname | “The Notorious” |
| Estimated latest net worth | About $200 million |
| Estimated 2025 net worth | About $200 million |
| Change in dollars | About $0 based on public estimates |
| Change in percentage | About 0% from widely reported 2025 estimates |
| Main wealth source | Combat sports, Proper No. Twelve sale, brand ventures |
| Country | Ireland |
| Industry | MMA, boxing, sports entertainment, consumer brands |
| Age | 37 |
| Birthday | July 14, 1988 |
| Birthplace | Dublin, Ireland |
| Nationality | Irish |
| Last updated | May 6, 2026 |
| Confidence level | Medium |
| Reason for confidence level | Public estimates agree around $200 million, but private business values, taxes, debts, spending, settlements, and exact equity stakes are not fully public. |
Basic Info
| Category | Detail |
|---|---|
| Full name | Conor Anthony McGregor |
| Nickname | The Notorious |
| Age | 37 |
| Birthday | July 14, 1988 |
| Birthplace | Dublin, Ireland |
| Nationality | Irish |
| Profession | MMA fighter, boxer, businessman, actor, promoter |
| Known for | UFC two-division champion, UFC pay-per-view records, Mayweather boxing match, Proper No. Twelve |
| Main industry | Combat sports and consumer brands |
| Public status | Public figure and international sports celebrity |
McGregor’s UFC record is listed as 22 wins and 6 losses by UFC Stats. He is a southpaw fighter and became known for striking, promotion, and unusually large event sales for MMA.
Family and Personal Life
Conor McGregor was born to Tony McGregor and Margaret McGregor in Dublin. Public biographies describe his family as working class, with his father working as a taxi driver and his mother working in laundry.
McGregor has two sisters, Erin and Aoife, according to public biographies. He has been with Dee Devlin since the early part of his rise, and People reported that the couple married in Vatican City on December 12, 2025. They have four children.
Because his children are minors and not relevant to estimating wealth, this article avoids unnecessary personal detail about them. McGregor’s family life is public in broad terms, but private home details, exact addresses, and minor-child information are not needed for a net-worth profile.
Education
McGregor attended Irish-language schools in Ireland. Public sources list Scoil Mológa at primary level and Coláiste de hÍde and Coláiste Cois Life in secondary education.
There is no strong public record of a college degree. Before becoming a full-time fighter, McGregor began a plumbing apprenticeship, but he left that path as his interest in combat sports grew.
His formal education did not directly create his wealth. His early sports background, boxing training, and confidence as a public performer mattered more. McGregor’s real career education came through boxing gyms, MMA training, Cage Warriors, UFC competition, media attention, and business opportunities that followed his fighting success.
Early Life and Background
McGregor grew up in Dublin and played football as a child. He began boxing at around age 12, partly to build confidence and defend himself. That boxing base later became central to his MMA style.
Before fame, McGregor was not a wealthy athlete. He trained while trying to find a stable path, including a plumbing apprenticeship. His early ambition was to fight, win, and become known beyond Ireland.
His first major career step came through regional MMA. He fought in Cage Warriors, where he became a two-division champion before joining the UFC. That became the turning point. UFC gave him a global stage, but McGregor’s trash talk, knockout wins, Irish fan base, and promotional skill made him more than a normal fighter.
Career Timeline
| Year | Milestone | What happened | Net worth impact |
|---|---|---|---|
| 1988 | Birth | Born in Dublin, Ireland | No financial impact |
| Early 2000s | Boxing start | Began boxing as a youth | Built fighting base |
| 2008 | MMA career begins | Started professional MMA career | Low early earnings |
| 2012 | Cage Warriors success | Won titles before UFC move | Raised market value |
| 2013 | UFC debut | Entered the UFC and quickly gained attention | First major global platform |
| 2015 | UFC featherweight title | Knocked out José Aldo in 13 seconds at UFC 194 | Massive star-power increase |
| 2016 | Two-division UFC champion | Beat Eddie Alvarez at UFC 205 | Became UFC’s biggest active draw |
| 2017 | Mayweather boxing match | Boxed Floyd Mayweather in one of the largest PPV events ever | Huge single-event payday |
| 2018 | UFC 229 | Faced Khabib Nurmagomedov in UFC’s biggest PPV event | Major PPV-related income |
| 2018 | Proper No. Twelve launched | Co-founded Irish whiskey brand | Created major business asset |
| 2021 | Proper No. Twelve sale | Founding group sold majority stake to Proximo Spirits in deal reported up to $600 million | Biggest wealth event |
| 2021 | Leg injury | Lost to Dustin Poirier at UFC 264 and suffered major leg injury | Reduced active fight earnings |
| 2024 | Road House role | Appeared in Amazon’s Road House remake | New entertainment income |
| 2024 | BKFC ownership | McGregor Sports and Entertainment became a part-owner of BKFC | Added private combat-sports equity |
| 2024–2025 | Legal and brand fallout | Civil case and sponsor changes affected brand relationships | Possible negative impact on future endorsement value |
| 2026 | UFC return rumors | Reports linked him to possible UFC 329 return discussions, but no official bout was confirmed by May 6, 2026 | Potential future payday, not counted as guaranteed wealth |
Businesses and Ownership
McGregor’s wealth is not just fight money. His biggest jump came from turning celebrity into consumer brands.
Proper No. Twelve Irish Whiskey
Proper No. Twelve was McGregor’s most important business win. He co-founded the Irish whiskey brand with business partners. In 2021, Proximo Spirits acquired a majority stake in a deal widely reported as worth up to $600 million for the founding group and earlier payments.
Forbes reported that McGregor earned about $150 million from the Proper No. Twelve stake sale during the year he topped its 2021 highest-paid athletes list. Other reports have placed his personal proceeds above $100 million or around €130 million. The exact after-tax amount is not public.
This is the clearest reason McGregor’s net worth is usually estimated around $200 million rather than only based on UFC purses.
McGregor Sports and Entertainment
McGregor Sports and Entertainment is tied to his promotional and investment activity. In 2024, it became part-owner of Bare Knuckle Fighting Championship, known as BKFC. The exact percentage has not been publicly confirmed. BKFC founder David Feldman said McGregor had “needle-moving” equity, but not a disclosed stake size.
Because the stake is private, it is hard to value. It may be worth millions if BKFC grows, but it should not be treated like liquid cash.
Forged Irish Stout
McGregor is also behind Forged Irish Stout, a stout brand connected with his Irish pub and hospitality interests. The brand’s official materials identify McGregor as founder. Public revenue and valuation figures are not available, so the value is best treated as speculative.
The Black Forge Inn
McGregor owns or is publicly tied to The Black Forge Inn, a Dublin pub and restaurant brand connected to Forged Irish Stout. The business adds to his hospitality profile, but reliable public valuation figures are limited.
August McGregor
August McGregor is a menswear brand created with luxury clothier David August. It fits McGregor’s public image: suits, fashion, fight-week presentation, and lifestyle branding. Its current financial scale is not publicly clear.
McGregor FAST
McGregor FAST is a fitness and training brand/app connected to McGregor’s athletic image. As with many private celebrity fitness ventures, exact user numbers, profits, and valuation are not public.
Acting and entertainment
McGregor made his acting debut in the 2024 film Road House. His exact pay was not officially disclosed, but multiple entertainment reports placed it above the previous high-profile first-time actor benchmark tied to Dwayne Johnson’s $5.5 million debut payday. Because the number is not confirmed by a studio filing, it should be treated as reported, not guaranteed.
Net Worth 2025 vs Latest Net Worth
| Year | Estimated net worth | Dollar change | Percentage change | Main reason for change |
|---|---|---|---|---|
| 2025 | About $200 million | — | — | Wealth still anchored by Proper No. Twelve sale, fight earnings, and businesses |
| 2026 | About $200 million | About $0 | About 0% | No confirmed new fight payday or public business exit by May 6, 2026 |
McGregor’s estimated wealth appears broadly flat from 2025 to the latest 2026 public estimates. That does not mean nothing changed. It means no reliable public source shows a new confirmed wealth event large enough to move the estimate.
A new UFC fight, major BKFC valuation event, business sale, or confirmed settlement detail could change the estimate. So could legal costs, endorsement losses, taxes, or private spending. For now, the most defensible number remains around $200 million.
Wealth High and Low
Highest known wealth range
McGregor’s highest public wealth range likely came after the 2021 Proper No. Twelve transaction. At that point, he had already earned major UFC and boxing paydays, and the whiskey sale added a reported nine-figure amount.
A reasonable public high range is $200 million to $250 million, depending on how much cash he kept after taxes, what private assets were worth, and whether reports counted gross career earnings as wealth.
Lowest recent wealth range
His lowest recent public range, after reaching global stardom, is likely around $150 million to $180 million before or around the Proper No. Twelve sale was fully reflected in estimates.
Public data is limited because McGregor does not release a personal balance sheet. No credible source shows exact debt, tax payments, legal costs, or private investment performance.
Why the high and low changed
The high was driven by the Proper No. Twelve sale, UFC pay-per-view earnings, the Mayweather fight, and brand value. The low side reflects uncertainty around taxes, spending, legal costs, lost brand deals, and private business valuations.
Income Sources
| Income source | Estimated value | Frequency | Reliability | Notes |
|---|---|---|---|---|
| Proper No. Twelve sale | Reported personal proceeds above $100 million; Forbes reported $150 million tied to sale year | One major exit | High for sale event, medium for personal after-tax amount | Biggest known wealth driver |
| UFC fights | Millions per major fight; disclosed purses are only part of total | Per fight | Medium | PPV points and bonuses are often not fully public |
| Mayweather boxing match | Reported tens of millions; Forbes-linked estimates around $85 million | One event | Medium | One of the largest combat-sports events ever |
| Endorsements | Millions during peak years | Recurring when active | Medium | Brand relationships changed after legal fallout |
| Road House acting role | Reported above $5.5 million benchmark | One film role | Low to medium | Not officially disclosed |
| BKFC ownership | Unknown; likely private equity value | Long-term | Low | Stake size and company valuation not public |
| Forged Irish Stout | Unknown | Business revenue | Low | Public brand, private financials |
| The Black Forge Inn / hospitality | Unknown | Business revenue | Low | Public business, private financials |
| August McGregor | Unknown | Product sales | Low | Private brand details limited |
| McGregor FAST | Unknown | App / fitness revenue | Low | Private financials |
| Merchandise and licensing | Unknown | Recurring | Low | Likely exists through brand activity, but no clear public totals |
| Real estate | Unknown public value | Asset value | Low | Property details are often reported by tabloids, but exact portfolio value is not reliably confirmed |
| Stocks / dividends / crypto | Not reliably public | Unknown | Low | No dependable public portfolio breakdown |
Property and Assets
McGregor is frequently linked to luxury homes, cars, watches, and travel. However, many property claims online are not supported by strong public records. For a reliable net-worth article, it is better to avoid exact addresses and avoid treating every lifestyle post as a verified asset.
Homes and real estate
Public reporting has linked McGregor to homes in Ireland and other high-end locations, but exact ownership structures and values are not always clear. Some properties may be owned through companies, financed, rented, or used temporarily.
Because exact public records are not consistently available, this article does not count a precise real estate portfolio value in the main net-worth estimate.
Cars
McGregor has publicly displayed luxury cars over the years. Reported brands often include Rolls-Royce, Lamborghini, Bentley, Range Rover, and other high-end vehicles. These cars support his public image, but their total value is small compared with the Proper No. Twelve sale and fight income.
Watches and fashion
McGregor is known for expensive watches, suits, and fashion. These items may be valuable, but they are not as easy to verify or resell at full retail value. They should not be treated as a major part of his net worth without documentation.
Yachts and private travel
McGregor has shown luxury travel and boating on social media. Public posts prove lifestyle, not always ownership. A yacht, jet, or villa can be owned, leased, chartered, borrowed, or sponsored. Without firm records, these are best described as lifestyle indicators rather than confirmed net-worth assets.
Lifestyle
McGregor’s lifestyle is one reason fans search his net worth. He is known for bold suits, watches, luxury cars, private travel, and high-profile events. That image helped him sell fights and build brands.
His spending style is public-facing and promotional. For McGregor, luxury is partly personal and partly marketing. The same attention that sells a fight can also sell whiskey, clothing, stout, and entertainment projects.
He has also been connected to charitable giving, including public donations and community support in Ireland, but exact lifetime philanthropy totals are not fully public. As with wealth, public donations should not be exaggerated beyond confirmed reports.
Controversies and Legal Issues
McGregor’s wealth story cannot be separated from controversy, because legal and reputation issues can affect endorsements, business partnerships, and public trust.
In November 2024, a civil jury in Ireland found McGregor liable in a sexual assault case brought by Nikita Hand. The case was civil, not criminal. Prosecutors had declined to bring criminal charges. McGregor denied wrongdoing and appealed. On July 31, 2025, the Court of Appeal in Dublin rejected his appeal.
The Associated Press reported that the original civil damages were €250,000 and that McGregor also faced legal costs. After the verdict, brands and partners moved away from him. Proximo Spirits said it would no longer use McGregor’s name and likeness in Proper No. Twelve marketing, and other companies ended or removed partnerships.
A separate U.S. lawsuit connected to an alleged 2023 incident at an NBA Finals game was dismissed with prejudice in 2025, according to MMA Fighting. “With prejudice” means the lawsuit cannot be refiled in that form.
Financial impact is hard to measure. The damages and legal costs are small compared with a $200 million estimate, but reputation damage can reduce future endorsement income and business opportunities.
Ranking
McGregor is not on Forbes’ current billionaire list. He is best described as a multimillionaire, not a billionaire.
His most important official-style money ranking came in 2021, when Forbes ranked him No. 1 among the world’s highest-paid athletes with $180 million in earnings over the prior 12 months. Most of that was tied to the Proper No. Twelve sale.
For MMA wealth, McGregor is widely treated as the richest UFC fighter or one of the richest combat-sports figures from MMA. However, there is no official UFC “rich list” with audited net worth. His standing is based on media estimates, Forbes earnings lists, reported business exits, and known pay-per-view history.
As of May 6, 2026, he is not best understood as a current UFC rankings leader. He has not fought in the UFC since July 2021, when he suffered a major leg injury in the Dustin Poirier fight.
Comparison With Similar People
| Person | Estimated net worth | Main source of wealth | Industry | Who is richer | Reason |
|---|---|---|---|---|---|
| Conor McGregor | About $200 million | UFC, boxing, whiskey sale, brands | MMA / business | — | Biggest business exit among MMA stars |
| Khabib Nurmagomedov | Common estimates around $40 million to $80 million | UFC career, coaching, business, endorsements | MMA | McGregor | McGregor had larger PPV and whiskey-sale income |
| Georges St-Pierre | Common estimates around $20 million to $30 million | UFC career, endorsements, acting | MMA | McGregor | GSP had elite career earnings but no comparable $600 million brand exit |
| Ronda Rousey | Common estimates around $14 million to $20 million | UFC, WWE, acting | MMA / WWE | McGregor | Rousey crossed into WWE and film, but McGregor’s boxing and whiskey paydays were larger |
| Brock Lesnar | Common estimates around $25 million to $30 million | WWE, UFC, endorsements | WWE / MMA | McGregor | Lesnar earned heavily in WWE, but McGregor’s Proper No. Twelve sale separates him |
| Floyd Mayweather | Common estimates around $400 million or more | Boxing, promotion, investments | Boxing | Mayweather | Mayweather had multiple enormous boxing paydays, including the McGregor fight |
| Jake Paul | Common estimates around $80 million to $100 million | Boxing, media, brands | Boxing / media | McGregor | Paul is growing fast, but McGregor’s UFC peak and whiskey exit remain larger |
| Dana White | Common estimates around $500 million | UFC equity sale, executive role, business | Sports business | Dana White | White’s wealth was built from UFC ownership and sale proceeds |
These figures are estimates, not audited balances. The comparison is useful because it shows why McGregor is unusual: most MMA fighters earn mainly from fights, while McGregor combined fighting, boxing, celebrity branding, and a major alcohol-brand exit.
Why Net Worth Estimates Differ
Net worth estimates differ because celebrity wealth is not a bank statement.
First, public shares and private businesses are valued differently. McGregor’s most important businesses are private, so outsiders do not know exact revenue, profit, debt, or equity value.
Second, gross earnings are not net worth. If a fighter earns $100 million, taxes, agents, managers, training costs, legal fees, business expenses, and lifestyle spending reduce what remains.
Third, some assets are illiquid. A private company stake, pub brand, or endorsement right cannot always be sold quickly for its headline value.
Fourth, debt is rarely public. Mortgages, business loans, tax obligations, and settlement terms may not be visible.
Fifth, media outlets use different methods. Some count gross career earnings. Some estimate current assets. Some update old numbers without explaining changes.
That is why McGregor may be listed at $180 million, $200 million, $220 million, or $250 million depending on the source. The most careful estimate is a range, with about $200 million as the center point.
How We Estimated Net Worth
This estimate uses public information, not private bank records.
The method includes:
| Category | How it was treated |
|---|---|
| Public wealth estimates | Compared widely reported current figures, especially the repeated $200 million estimate |
| Forbes earnings history | Used Forbes’ 2021 highest-paid athletes reporting as a strong anchor for the Proper No. Twelve year |
| Proper No. Twelve sale | Counted as McGregor’s largest known wealth event, but adjusted for uncertainty around taxes and partner splits |
| Fight earnings | Included UFC and boxing paydays, especially Mayweather and major UFC PPV events |
| Business ownership | Included known ventures, but avoided unsupported valuations |
| Real estate | Mentioned but not heavily counted because exact values and ownership are unclear |
| Endorsements | Included as part of peak income, with caution because some partnerships ended |
| Legal issues | Treated as a possible drag on future brand value and cash, but not enough to erase the main wealth base |
| Rankings | Used Forbes and public sports-business reporting where available |
The result is not exact. The best wording is: Conor McGregor is likely worth around $200 million based on publicly available information.
Latest Updates
Most recent wealth change
No confirmed new public transaction by May 6, 2026 shows a major change from the widely reported $200 million estimate.
Most recent business update
McGregor’s BKFC part-ownership remains one of his most important post-UFC business moves. The stake size and value are not public.
Most recent legal update
In July 2025, McGregor lost his appeal in the Irish civil sexual assault case. The ruling increased the importance of reputation risk in any future endorsement estimate.
Most recent career update
As of May 6, 2026, MMA reporting discussed a possible UFC 329 return and a possible Max Holloway rematch, but no official fight contract or main event had been confirmed in the reports reviewed.
Date of latest available information
This article uses public information available through May 6, 2026.
FAQ
What is Conor McGregor’s net worth?
Conor McGregor’s net worth is estimated at about $200 million in 2026. It is an estimate, not a confirmed cash balance.
How did Conor McGregor get rich?
He got rich through UFC pay-per-view fights, the Floyd Mayweather boxing match, endorsements, Proper No. Twelve Irish Whiskey, and other business ventures.
What is Conor McGregor’s salary?
McGregor does not have a normal public salary. He earns through fight purses, PPV points, business income, endorsements, acting, and investments.
How much does Conor McGregor make per year?
His yearly income changes a lot. In a year with no major fight or business sale, it may be far lower than his peak years. In 2021, Forbes reported he earned $180 million, mainly from Proper No. Twelve.
Is Conor McGregor a billionaire?
No. McGregor is not a confirmed billionaire. He is best described as a multimillionaire with an estimated net worth around $200 million.
What businesses does Conor McGregor own?
His known business interests include McGregor Sports and Entertainment, BKFC part-ownership, Forged Irish Stout, The Black Forge Inn, August McGregor, and McGregor FAST. He also co-founded Proper No. Twelve before the majority sale to Proximo Spirits.
What is Conor McGregor’s biggest income source?
His biggest known wealth source is the Proper No. Twelve Irish Whiskey sale. His biggest sports payday was the Floyd Mayweather boxing match.
How much was Conor McGregor worth in 2025?
Most public estimates placed him around $200 million in 2025.
Why do Conor McGregor net worth estimates differ?
They differ because private business values, taxes, debts, legal costs, spending, and exact equity stakes are not fully public.
Who is richer, Conor McGregor or Khabib Nurmagomedov?
McGregor is widely estimated to be richer. McGregor’s larger PPV earnings, Mayweather payday, and whiskey sale give him a higher public wealth estimate.
Does Conor McGregor own real estate?
He is publicly linked to real estate and hospitality assets, but exact property values and ownership structures are not fully reliable. This article avoids exact addresses.
What is Conor McGregor’s latest ranking?
He is not a billionaire and is not treated as a current UFC rankings leader. His biggest money ranking was Forbes’ 2021 highest-paid athletes list, where he ranked No. 1.
Conclusion
Conor McGregor net worth is best estimated at about $200 million in 2026. His fortune came from a rare mix of combat-sports fame, UFC pay-per-view power, the Floyd Mayweather boxing payday, and the huge Proper No. Twelve whiskey sale. His newer businesses, including BKFC involvement and Forged Irish Stout, may add value, but their exact numbers are private.
The estimate has not clearly changed from 2025 because no new confirmed fight payday or major business exit has been reported by May 6, 2026. At the same time, legal issues and lost partnerships may affect future earning power. McGregor remains one of the richest MMA figures ever, but his exact wealth is still an informed estimate, not a public balance sheet.
Source Notes
| Source name | Page title | What it was used for | Link |
|---|---|---|---|
| Forbes | Conor McGregor profile | Forbes ranking history, age, source of wealth, past highest-paid athlete context | |
| Forbes | The World’s 10 Highest-Paid Athletes: Conor McGregor Leads… | 2021 earnings, $180 million figure, Proper No. Twelve sale income | |
| CelebrityNetWorth | Conor McGregor Net Worth | Current $200 million public estimate and simple net-worth benchmark | |
| Parade | Conor McGregor Net Worth 2026 | 2026 public estimate and readability comparison | |
| UFC Stats | Conor McGregor fighter profile | Official record, birthday, stance, physical stats | |
| UFC | Conor McGregor athlete profile | UFC champion status and official athlete context | |
| Britannica | Conor McGregor biography | Early life, parents, school background, working-class context | |
| People | McGregor marries Dee Devlin | Marriage date, relationship context, children count | |
| ABC News | Conor McGregor sells majority of Proper No. Twelve | Proper No. Twelve sale details and Proximo transaction context | |
| The Drinks Business | Conor McGregor sells majority of Proper No. Twelve | Reported $600 million sale and continued stakeholder context | |
| MMA Fighting | BKFC founder: Conor McGregor has equity stake | BKFC ownership context and private equity uncertainty | |
| Forged Irish Stout | Official Forged Irish Stout site | Confirmation of McGregor-linked stout brand | |
| Official Conor McGregor site | Forged / August McGregor pages | Business-brand context for Forged and August McGregor | |
| ESPN | Conor McGregor civil appeal report | Legal appeal and civil case status | |
| Associated Press | McGregor loses appeal against civil jury finding | Civil case details, damages, appeal outcome, legal-cost context | |
| Associated Press | Companies drop McGregor after civil ruling | Brand fallout after the civil ruling | |
| MMA Fighting | Sexual assault lawsuit dropped against McGregor | U.S. lawsuit dismissal context | |
| Yahoo Sports | McGregor return update | Latest context on not fighting since UFC 264 and return talk | |
| MMA Fighting | Max Holloway responds to McGregor UFC 329 rumors | May 2026 career update and no confirmed contract context | |
| ESPN | McGregor MMA profile | Career fight timeline and major UFC results | |
| Sportskeeda | UFC 229 PPV buys | UFC 229 PPV context and 2.4 million buy figure | |
| Forbes | Mayweather single payday article | Mayweather comparison and boxing-event financial scale |
